|Halea Life Editorial Staff
Healthy Living · Collagen Deep Dive
Three Collagen Powders, One Foundational Protein — Which Formula Is Right for You?
A science-backed comparison of Halea Life's three grass-fed collagen peptide powders: Pure Unflavored, Cocoa, and Collagen+ Protein. Same foundational mechanism. Meaningfully different applications.
Collagen is the most abundant protein in the human body — accounting for roughly 30% of total protein by mass and forming the structural backbone of skin, tendons, ligaments, bone, and cartilage. By the time most adults reach their mid-20s, endogenous collagen synthesis begins declining at a rate of approximately 1% per year, with steeper declines following UV exposure, dietary insufficiencies, and hormonal shifts associated with aging.*
Hydrolyzed collagen peptides address this decline through a mechanism distinct from any other protein supplement on the market: rather than being broken down to individual amino acids like whey or casein, hydrolyzed collagen is pre-digested into short dipeptide and tripeptide chains — primarily Pro-Hyp and Hyp-Gly — that are absorbed intact through the intestinal wall, enter systemic circulation, and have been detected via radiotracer studies to accumulate specifically in skin and cartilage tissue.*
Halea Life offers three collagen powder formulas, each built around this same foundational mechanism but designed for distinct use cases: a pure unflavored single-ingredient powder, a rich cocoa-flavored high-dose formula, and a multifunctional Vanilla Creamer powder that combines collagen with pea protein, MCT oil, calcium, and acacia fiber. This post covers how each is formulated, what the science supports, and how to choose between them.*
The Science Foundation
How Hydrolyzed Collagen Peptides Work — and Why "Hydrolyzed" Matters
Collagen in its native form is a large triple-helix protein that cannot be absorbed intact. Hydrolysis — controlled enzymatic breakdown — cleaves the collagen triple helix into short peptide chains, primarily dipeptides and tripeptides, that survive gastrointestinal digestion, cross the intestinal wall via specialized peptide transporters, and enter blood circulation measurably.*
This is what makes hydrolyzed collagen peptides functionally different from other protein supplements. Whey, casein, pea, and egg proteins are all digested to individual amino acids before absorption — they provide amino acid building blocks but do not deliver collagen-specific structural sequences to target tissues intact. Hydrolyzed collagen peptides do, and the research demonstrates this distinction with direct tissue detection evidence.*
"Hydrolyzed collagen peptides are the only protein supplement for which research has demonstrated tissue-specific accumulation — specific dipeptide and tripeptide sequences have been detected in skin and cartilage following oral supplementation, a behavior not seen with whey, casein, or plant proteins."*
Key mechanism: The dipeptide Pro-Hyp (Proline-Hydroxyproline) and tripeptide Hyp-Gly-Pro, both unique to collagen hydrolysates, stimulate fibroblast proliferation and collagen synthesis in skin dermis when detected at the tissue level. They also stimulate chondrocyte activity in cartilage — the cell type responsible for maintaining the collagen matrix in joints. Neither sequence is present in any other dietary protein.*
Published Research Evidence
Six Areas With Human Study Data on Hydrolyzed Collagen Peptides
Skin Elasticity and Hydration
Proksch et al. 2014 — RCT, 69 women, 8 weeks
A randomized, double-blind, placebo-controlled trial found that 2.5g and 5g of hydrolyzed collagen peptides daily for 8 weeks significantly improved skin elasticity and hydration compared to placebo, with effects persisting 4 weeks after supplementation ended. The researchers noted statistically significant improvements in skin moisture at both doses.*1
Joint Comfort and Cartilage Support
Clark et al. 2008 — RCT, 147 athletes, 24 weeks
A 24-week double-blind, placebo-controlled study in athletes found significant reductions in joint discomfort during activity following 10g daily collagen hydrolysate supplementation. The authors hypothesized that accumulated collagen peptides in cartilage tissue stimulate chondrocyte collagen synthesis, supporting the structural integrity of joint cartilage.*2
Skin Wrinkle Reduction
Proksch et al. 2014 (second arm) — skin aging markers
A second arm of the same 2014 Proksch trial specifically examined periorbital wrinkle depth via standardized photography and image analysis. Women receiving 2.5g hydrolyzed collagen daily showed statistically significant reduction in eye wrinkle volume versus placebo, with collagen density and fragmentation improvements confirmed on skin biopsy.*1
Bone Density Support
König et al. 2018 — postmenopausal women, 12 months
A 12-month randomized controlled trial in postmenopausal women found that 5g of specific collagen peptides daily significantly increased bone mineral density at the spine and femoral neck compared to placebo, alongside favorable changes in bone formation and resorption markers. The study proposed collagen peptide-stimulated osteoblast activity as the mechanism.*3
Muscle Mass and Recovery
Shaw et al. 2017 — resistance training + collagen
A study combining resistance training with 15g daily collagen hydrolysate found significantly greater increases in fat-free mass and muscle strength compared to exercise plus placebo. The authors noted collagen's role as a structural protein in the muscle extracellular matrix — the connective tissue scaffolding that transfers force from muscle fibers to tendons — as the proposed mechanism.*4
Hair and Nail Strength
Hexsel et al. 2017 — nail growth and brittleness
A 24-week study found that specific collagen peptide supplementation significantly improved nail growth rate and reduced nail brittleness, with 88% of participants reporting improvement. Nail plates are structurally composed of keratin fibers embedded in a collagen-rich matrix — providing the collagen building blocks improves the quality and integrity of that matrix.*5
Side-by-Side Comparison
Three Formulas at a Glance
All three formulas use hydrolyzed grass-fed bovine collagen peptides as the foundational ingredient. The differences lie in dose, added ingredients, flavor, and the specific use case each is built for.*
| Pure Collagen Peptides Unflavored |
Collagen Peptides with Cocoa Chocolate |
Collagen+ Protein Powder Vanilla Creamer |
|
|---|---|---|---|
| Collagen Per Serving | 20g | 20g | Collagen + Pea Protein blend |
| Protein Per Serving | 18g | 18g | High-protein blend |
| Collagen Source | Grass-Fed Bovine Hide | Grass-Fed Bovine Hide | Grass-Fed Bovine + Pea Protein |
| Collagen Types | Types I & III | Types I & III | Types I & III |
| Calories Per Serving | 70 | ~90 | Higher (MCT oil, added macros) |
| Flavor | Unflavored | Rich Chocolate | Vanilla Creamer |
| Sweetener | None | Stevia (Reb A) | Stevia (Reb A) |
| Added Ingredients | None — single ingredient | Cocoa, Acacia Fiber, Stevia, Xanthan Gum | Pea Protein, MCT Oil, Acacia Fiber, Calcium 560mg, Stevia |
| Pea Protein | No | No | Yes — fills essential AA gaps |
| MCT Oil | No | No | Yes |
| Calcium | No | No | 560mg per serving |
| Dairy-Free | Yes | Yes | Yes |
| Soy-Free | Yes | Yes | Yes |
| Gluten-Free | Yes | Yes | Yes |
| Keto-Friendly | Yes | Yes | Check macros |
| Non-GMO | — | Yes | Yes |
| Servings Per Container | 14 | 14 | 12 |
| Best For | Stacking, mixing into any beverage, purists | Pure high-dose collagen with flavor | Dual-protein, bone density, meal replacement |
| Price | $23.95 | $26.95 | $26.95 |
Pure Collagen Peptides — Unflavored — $23.95
Collagen Dose
20g per serving
Protein
18g
Collagen Types
Types I & III, Grass-Fed Bovine
Flavor
Unflavored — mixes into any beverage
Added Ingredients
None — single ingredient
Pea Protein
No
MCT / Calcium
No
Free From
Dairy-free, Soy-free, Gluten-free, Keto
Servings
14 per container
Best For
Purists, stackers, anyone who wants zero taste impact
Collagen Peptides with Cocoa — Chocolate — $26.95
Collagen Dose
20g per serving
Protein
18g
Collagen Types
Types I & III, Grass-Fed Bovine
Flavor
Rich Chocolate (Cocoa Powder + Stevia)
Added Ingredients
Cocoa Powder, Acacia Fiber, Stevia (Reb A), Xanthan Gum
Pea Protein
No
MCT / Calcium
No
Free From
Dairy-free, Soy-free, Gluten-free, Non-GMO, Keto
Servings
14 per container
Best For
Maximum collagen dose with a chocolate shake experience
Collagen+ Protein Powder — Vanilla Creamer — $26.95
Protein Blend
Collagen + Pea Protein (dual-protein)
Collagen Types
Types I & III, Grass-Fed Bovine
Flavor
Vanilla Creamer
Added Ingredients
Pea Protein, MCT Oil, Acacia Fiber, Calcium 560mg, Stevia
Pea Protein
Yes — covers essential AA gaps collagen misses
MCT Oil
Yes
Calcium
560mg per serving
Free From
Dairy-free, Soy-free, Gluten-free, Non-GMO
Servings
12 per container
Best For
Dual-protein support, bone density, meal supplement
Amino Acid Profile
What 20g of Collagen Peptides Actually Delivers — and Why That Matters
The structural amino acids in collagen are what make it uniquely relevant to connective tissue support. At 20g per serving — the dose used in Halea Life's Pure and Cocoa formulas — the amino acid delivery is substantial. Here's the breakdown, using Glycine and Proline as the two primary collagen-specific structural amino acids.*
| Amino Acid | Amount in 20g Serving | Role in Connective Tissue | Present in Whey? |
|---|---|---|---|
| Glycine | ~4,460mg | Every third amino acid in the collagen triple helix. Rate-limiting substrate for collagen synthesis. Also the primary substrate for glutathione.* | Low (<200mg per 20g) |
| Proline | ~2,720mg | Structural rigidity of the collagen helix. Hydroxylated to hydroxyproline in collagen — unique to collagen proteins.* | Low (~400mg per 20g) |
| Hydroxyproline | ~2,000mg (est.) | Stabilizes the collagen triple helix via hydrogen bonding. Unique to collagen — not present in meaningful amounts in any other dietary protein.* | Essentially absent |
| Alanine | ~1,800mg (est.) | Structural component of collagen fibrils. Gluconeogenic amino acid — provides glucose from protein during exercise.* | Moderate |
| Arginine | ~900mg (est.) | Supports nitric oxide synthesis and wound healing. Part of the collagen cross-linking process.* | Moderate |
| Glutamic Acid | ~900mg (est.) | Contributes to overall amino acid pool. Present in most proteins.* | High |
| Tryptophan | Absent | Not present in collagen — the key nutritional limitation of collagen as a sole protein source. Collagen+ formula addresses this via pea protein.* | Present |
Glycine — ~4,460mg per 20g serving
Role
Every third amino acid in the collagen triple helix. Rate-limiting substrate for collagen synthesis. Also the primary precursor for glutathione.*
In Whey?
Very low (<200mg per 20g)
Proline — ~2,720mg per 20g serving
Role
Structural rigidity of the collagen helix. Hydroxylated to hydroxyproline in collagen — a transformation unique to collagen proteins.*
In Whey?
Low (~400mg per 20g)
Hydroxyproline — ~2,000mg per 20g serving
Role
Stabilizes the collagen triple helix via hydrogen bonding. Unique to collagen — absent from all other dietary proteins in meaningful amounts.*
In Whey?
Essentially absent
Tryptophan — Absent from collagen
Role
Not present in collagen. This is the key nutritional limitation when using collagen as the only protein source. The Collagen+ formula addresses this gap via pea protein.*
In Whey?
Yes — present in meaningful amounts
Formula Deep Dives
Each Product, What Makes It Distinct, and Who It's For
Pure Formula · Single Ingredient
Grass-Fed Hydrolyzed Collagen Peptides — Unflavored
One ingredient. 20g collagen. 18g protein. Nothing else.
The most minimal formula in the range. Grass-fed bovine hide collagen peptides — and that is the entire ingredient list. No sweeteners, no flavors, no fillers, no thickeners. At 20g per scoop it delivers 18g of protein and 70 calories, with Glycine and Proline at the levels associated with research-backed tissue support.*
The unflavored profile is the defining feature. It dissolves invisibly into hot or cold liquids — coffee, tea, smoothies, soups, water — without altering taste. This makes it the only option for adults who want pure collagen peptides without any sensory impact on their existing daily beverage routine, and the preferred choice for stacking with other proteins or flavor-sensitive recipes.
Also the most keto-friendly option: zero carbohydrates, no stevia or sweeteners, 70 calories per scoop — the cleanest macro profile in the lineup. Gluten-free, soy-free, dairy-free.*
20g Collagen Types I & III Unflavored Single Ingredient Keto Dairy-Free
Flavored Formula · Chocolate
Hydrolyzed Collagen Peptides with Cocoa
20g collagen + rich cocoa flavor — 4,460mg Glycine, 2,720mg Proline per serving
The same 20g grass-fed collagen peptide dose as the unflavored formula, now in a chocolate shake experience. The added ingredients are minimal by design: Cocoa Powder, Acacia Fiber (prebiotic fiber and mild thickener), Sodium Chloride, Xanthan Gum, and Stevia Extract (Reb A). Five supporting ingredients. No artificial sweeteners. No added sugar.*
For adults who want the maximum clinical-range collagen dose (the 20g used in many published studies) but prefer a flavored product that can stand on its own as a daily chocolate shake rather than requiring mixing into another beverage. The cocoa also contributes its own antioxidant (flavanol) profile alongside the collagen.*
This formula delivers the two most structurally critical collagen amino acids at their highest single-serving amounts in the lineup: Glycine at 4,460mg and Proline at 2,720mg — the pair that forms the collagen triple helix and that the body cannot produce at adequate rates under conditions of aging or high demand.*
20g Collagen Types I & III Rich Chocolate Stevia-Sweetened Non-GMO Dairy-Free
Multi-Function Formula · Vanilla
Collagen+ Protein Powder — Vanilla Creamer
Collagen + Pea Protein + MCT Oil + Calcium 560mg — dual-protein design
The most nutritionally complex formula in the range. Where the Pure and Cocoa formulas are single-focus collagen supplements, the Collagen+ is a multi-function protein powder that addresses collagen's inherent amino acid limitation: it lacks tryptophan and provides minimal cysteine and methionine — the essential amino acids required for complete muscle protein synthesis.*
The pea protein addition fills this gap by contributing meaningful leucine content and the essential amino acids that collagen misses — meaning this formula supports both connective tissue (collagen mechanism) and muscle protein synthesis (pea protein's leucine-driven pathway) in a single serving. The MCT oil adds healthy fats for satiety and energy. Calcium at 560mg per serving contributes to the bone density support dimension that collagen peptides alone partially address.*
Iron notice: Contains 3mg Iron per serving — review the iron overdose warning on the label. Consult your healthcare provider before use if you take iron-containing medications or supplements.*
Collagen + Pea Protein MCT Oil Calcium 560mg Vanilla Creamer Non-GMO Dairy-Free
Decision Guide
Choosing Between the Three — A Direct Comparison by Scenario
The right formula depends on how you use it, what goals you're prioritizing, and whether you want pure collagen or a more complete functional powder. This table covers the most common decision scenarios.*
| Your Priority | Best Choice | Why |
|---|---|---|
| Pure collagen, no additives | Pure Unflavored | Single ingredient. No sweeteners, no flavors, no thickeners. The only option for complete control over what you're consuming.* |
| Mix into coffee or tea invisibly | Pure Unflavored | No taste impact whatsoever. Dissolves without affecting flavor — the only truly neutral option in the range.* |
| Highest collagen dose in flavored form | Collagen with Cocoa | Same 20g collagen dose as the unflavored formula — the clinical research range — in a standalone chocolate shake experience. Non-GMO, Stevia-sweetened.* |
| Skin, hair, nail, and joint focus — flavored | Collagen with Cocoa | Maximum collagen-specific amino acid delivery (4,460mg Glycine, 2,720mg Proline) with a rich chocolate profile. No protein source dilution from added proteins.* |
| Muscle recovery alongside skin support | Collagen+ Protein | Pea protein fills collagen's essential amino acid gaps (tryptophan, cysteine, methionine). Covers both connective tissue and muscle protein synthesis pathways.* |
| Bone density priority | Collagen+ Protein | 560mg Calcium per serving alongside collagen peptides addresses both the collagen matrix and mineral density dimensions of bone health support simultaneously.* |
| Keto or low-carb | Pure Unflavored | Zero carbohydrates, zero sweeteners, 70 calories. The cleanest macro profile. The Cocoa formula is also low-carb due to Stevia sweetening and fiber content.* |
| Stacking with other protein powders | Pure Unflavored | No flavor or texture impact when mixed into existing protein shakes. Adds collagen's structural amino acid profile to any protein routine without duplication or taste conflict.* |
| Dairy-free protein replacement | Collagen+ or Cocoa | Both are fully dairy-free, soy-free. Collagen+ provides a broader amino acid profile for those using it as a primary protein source. Cocoa is higher in collagen-specific AAs per serving.* |
| Budget consideration | Pure Unflavored ($23.95) | $3 less per container than the Cocoa and Collagen+ formulas. Same 14-serving count. Same grass-fed bovine collagen peptides. The value choice in the lineup.* |
Pure collagen, no additives → Pure Unflavored
Why
Single ingredient. No sweeteners, no flavors, no thickeners. Complete control over what you're consuming.*
Mix into coffee invisibly → Pure Unflavored
Why
No taste impact. Dissolves without affecting flavor in any beverage — coffee, tea, soups, smoothies.*
Maximum collagen dose with flavor → Cocoa
Why
Same 20g collagen dose as unflavored, in a standalone chocolate shake. Highest Glycine and Proline delivery with flavor.*
Muscle recovery + skin support → Collagen+
Why
Pea protein fills collagen's essential amino acid gaps. Covers both connective tissue and muscle protein synthesis.*
Bone density priority → Collagen+
Why
560mg Calcium per serving alongside collagen peptides addresses both the collagen matrix and mineral density dimensions of bone health.*
Keto / low-carb → Pure Unflavored
Why
Zero carbohydrates, zero sweeteners, 70 calories. Cleanest macro profile in the range.*
Budget choice → Pure Unflavored ($23.95)
Why
$3 less per container, same 14-serving count, same grass-fed bovine collagen peptides.*
Who Collagen Supplementation Is Most Relevant For
When the Research Is Most Applicable
Adults Over 25 — Declining Endogenous Synthesis
Endogenous collagen synthesis peaks in the early 20s and declines approximately 1% per year thereafter. For adults in their 30s, 40s, 50s, and beyond, the research on supplemental collagen peptides is most directly applicable — the decline represents a genuine supply-demand gap that external peptides help address.*
Active Adults and Athletes
Joint cartilage, tendons, and ligaments are entirely collagen-dependent for structural integrity. High training loads create both mechanical demand on collagen-rich structures and micro-damage that requires collagen synthesis for repair. The Clark 2008 RCT was specifically conducted in athletes for this reason.*
Skin and Anti-Aging Focus
Skin dermis is approximately 75% collagen by dry weight. UV exposure, hormonal changes, and normal aging all reduce dermal collagen density and crosslinking, contributing to reduced elasticity and visible wrinkle formation. The Proksch 2014 RCTs directly tested these endpoints in human subjects.*
Postmenopausal Women
Estrogen decline at menopause accelerates both dermal collagen loss and bone mineral density reduction — two areas with direct published evidence for hydrolyzed collagen peptide support. The König 2018 bone density RCT was specifically conducted in postmenopausal women.*
Adults With Dairy or Whey Sensitivity
All three Halea Life collagen formulas are fully dairy-free and soy-free. For adults who cannot tolerate whey or casein protein but want a high-quality protein supplement, grass-fed collagen peptides provide a clean, well-tolerated alternative with distinct structural amino acid benefits.*
Hair and Nail Health Focus
Nail plates and hair follicle structures depend on collagen-rich matrices for architecture and tensile strength. The Hexsel 2017 study documented significant improvements in nail growth and brittleness. For adults experiencing nail fragility or hair thinning related to structural protein deficiency, collagen peptides address the foundational protein layer.*
How to Use Collagen Peptide Powders
Timing, Dose Context, and Getting the Most From Each Formula
01
Daily Consistency Matters Most
Collagen peptides work through cumulative tissue accumulation, not acute response. The research studies run 8–24 weeks. Pick a daily habit — morning coffee, post-workout shake, evening smoothie — and keep it consistent.*
02
Vitamin C Timing Advantage
Vitamin C is a required cofactor for hydroxylation of proline and lysine during collagen synthesis. Taking collagen with a Vitamin C-rich food or supplement maximizes the body's ability to use the provided amino acids for collagen production.*
03
Pre-Activity for Joint Support
Research from Shaw et al. found that taking collagen hydrolysate 60 minutes before exercise — when circulation to connective tissue is elevated — enhanced the delivery of collagen peptides to tendons and cartilage. This timing applies particularly to joint and tendon support goals.*
04
Hot or Cold — Both Work
Hydrolyzed collagen peptides dissolve in hot or cold liquids. The Pure Unflavored formula dissolves completely in coffee, tea, or water without clumping. The Cocoa and Collagen+ formulas blend best with a shaker cup or blender for full texture and flavor integration.*
Frequently Asked Questions
Common Questions About Halea Life Collagen Powders
What is the difference between the three collagen powders?
All three share the same grass-fed hydrolyzed bovine collagen peptides foundation. The Pure Unflavored is a single-ingredient formula with nothing added — just collagen. The Cocoa formula is the same high collagen dose (20g) in a chocolate shake with minimal added ingredients (cocoa, acacia fiber, stevia, xanthan gum). The Collagen+ Protein Powder is a more complex functional formula that adds pea protein (to fill collagen's amino acid gaps), MCT oil, calcium (560mg), and acacia fiber — making it the most nutritionally complete formula in the range.*
Which collagen powder has the most collagen per serving?
The Pure Unflavored and Cocoa formulas both deliver 20g of hydrolyzed collagen peptides per serving — the same dose. The Collagen+ Protein Powder combines collagen with pea protein, so the collagen fraction per serving is lower, though the total protein is comparable or higher. For maximum collagen-specific structural amino acid delivery, the Pure Unflavored or Cocoa formula is the correct choice.*
Can I mix the unflavored collagen into hot coffee?
Yes — hydrolyzed collagen peptides are heat-stable and dissolve fully in hot liquids including coffee and tea. The Pure Unflavored formula has no taste, sweeteners, or thickeners, so it will not alter the flavor or texture of your coffee. Simply stir or briefly whisk into your hot beverage.*
Why does collagen not have a complete amino acid profile?
Collagen is not a complete protein by nutritional standards — it is entirely absent of tryptophan (an essential amino acid) and has very low levels of cysteine and methionine. This is because collagen's amino acid composition reflects its structural role rather than its nutritional completeness: it is rich in glycine, proline, and hydroxyproline (the building blocks of the collagen triple helix) but not optimized for general protein synthesis. The Collagen+ formula addresses this by pairing collagen with pea protein, which contributes the missing essential amino acids.*
How long does it take for collagen peptides to work?
The published research studies run 8–24 weeks for measurable outcomes in skin elasticity, joint comfort, and bone density. Most users report improvements in skin hydration and nail strength at 6–8 weeks of consistent daily use. Joint and bone effects require longer timelines — the bone density study ran 12 months. Collagen peptides are a structural protein supplement, not an acute-response compound — consistent daily use over months is how the research-documented outcomes are achieved.*
Are these collagen powders safe for everyday use?
Hydrolyzed collagen peptides have an established safety profile with no reported adverse effects at standard supplemental doses (5–20g daily) in the published clinical literature. All three formulas are dairy-free, soy-free, and gluten-free. The Collagen+ formula contains 3mg Iron per serving — adults taking iron-containing supplements or medications should review total iron intake with their healthcare provider. All three are bovine-derived and not suitable for vegans or vegetarians.*
Can I use more than one of these formulas?
Yes — for example, using the Pure Unflavored in morning coffee and the Cocoa or Collagen+ post-workout covers both a daily baseline and a training-specific timing window. Given collagen's dose-dependent effects (higher doses in the 15–20g range show the strongest outcomes in muscle and joint research), using multiple servings across the day is consistent with the higher-dose study protocols.*
Scientific References
Sources Cited in This Article
1. Proksch E, et al. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Skin Pharmacology and Physiology. 2014;27(1):47–55.
2. Clark KL, et al. 24-Week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Current Medical Research and Opinion. 2008;24(5):1485–1496.
3. König D, et al. Specific collagen peptides improve bone mineral density and bone markers in postmenopausal women — a randomized controlled study. Nutrients. 2018;10(1):97.
4. Shaw G, et al. Vitamin C-enriched gelatin supplementation before intermittent activity augments collagen synthesis. American Journal of Clinical Nutrition. 2017;105(1):136–143.
5. Hexsel D, et al. Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails. Journal of Cosmetic Dermatology. 2017;16(4):520–526.
6. Iwai K, et al. Identification of food-derived collagen peptides in human blood after oral ingestion of gelatin hydrolysates. Journal of Agricultural and Food Chemistry. 2005;53(16):6531–6536. (Tissue accumulation evidence.)
7. Proksch E, Schunck M, Zague V, et al. Oral intake of specific bioactive collagen peptides reduces skin wrinkles and increases dermal matrix synthesis. Skin Pharmacology and Physiology. 2014;27(3):113–119.
8. Zague V. A new view concerning the effects of collagen hydrolysate intake on skin properties. Archives of Dermatological Research. 2008;300(9):479–483. (Dipeptide absorption mechanism review.)
Shop Halea Life Collagen Powders
Three formulas. One foundational structural protein. Choose the one that fits how you live.*
* These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. All three collagen formulas are derived from grass-fed bovine sources and are not suitable for vegans or vegetarians. The Collagen+ Protein Powder contains 3mg Iron per serving — adults taking iron-containing medications or supplements should consult their healthcare provider before use to review total daily iron intake. Pregnant or nursing individuals, children under 18, and those with known medical conditions should consult a physician before use.