{"id":1423,"date":"2026-10-02T21:45:44","date_gmt":"2026-10-02T13:45:44","guid":{"rendered":"http:\/\/www.puriactives.com\/en\/?p=1423"},"modified":"2026-10-02T21:45:44","modified_gmt":"2026-10-02T13:45:44","slug":"puriactives-znhc","status":"publish","type":"post","link":"http:\/\/www.puriactives.com\/en\/?p=1423","title":{"rendered":"PuriActives\u00ae ZnHC"},"content":{"rendered":"

PURIPHARM CO. LTD.<\/p>\n

PuriActives\u00ae ZnHC<\/h2>\n

Zinc Hydrolyzed Collagen<\/p>\n

The Science and Technology of Skin & Hair-Fiber Conditioning<\/b><\/p>\n

“Condition the surface, reshape the environment.”<\/p>\n

INCI NAME<\/b>\u3000ZINC HYDROLYZED COLLAGEN<\/p>\n

01 \u00b7 PLATFORM POSITIONING<\/p>\n

A New Perspective on Protein Conditioning<\/h2>\n

More than hydrolyzed collagen<\/p>\n

The value of conventional hydrolyzed collagen centers on conditioning, hydration, and surface interaction. PuriActives\u00ae ZnHC adds zinc functionality on top of this peptide platform \u2014 building a differentiated ingredient story that extends from skin conditioning to sebum balance and scalp care.<\/p>\n

Six directions:<\/b> skin conditioning \u00b7 water management \u00b7 sebum balance \u00b7 pore appearance \u00b7 hair-fiber conditioning \u00b7 scalp care<\/p>\n

<\/p>\n

Figure 01 \u2014 Conceptual fusion of two functional platforms. Chemical concept illustration only; not a specific molecular structure.<\/p>\n

01 \u00b7 PLATFORM POSITIONING<\/p>\n

What Is Zinc Hydrolyzed Collagen?<\/h2>\n

Zinc hydrolyzed collagen is the zinc-bound derivative of hydrolyzed collagen peptides \u2014 uniting a peptide-rich conditioning base with the functionality of Zn2+.<\/p>\n

Controlled hydrolysis<\/b><\/p>\n

Native collagen is degraded under controlled conditions into lower-molecular-weight peptide fractions \u2014 improving processability in aqueous systems and surface-interaction capability.<\/p>\n

Zinc binding<\/b><\/p>\n

Side-chain functional groups on the peptide backbone \u2014 carboxyl, amino, and hydroxyl \u2014 offer potential coordination environments for Zn2+ ions. No single defined molecular formula is implied.<\/p>\n

<\/p>\n

Figure 02 \u2014 From collagen fiber to zinc-bound peptide network. Dashed lines indicate coordination \u2014 conceptual illustration, not a structural formula.<\/p>\n

01 \u00b7 PLATFORM POSITIONING<\/p>\n

The Functional Architecture of PuriActives\u00ae ZnHC<\/h2>\n

Four functions, one peptide\u2013mineral architecture \u2014 across skin, scalp, and hair fiber<\/p>\n

<\/p>\n

Figure 03 \u2014 The four-function mechanistic architecture of the PuriActives\u00ae ZnHC platform.<\/p>\n

02 \u00b7 COLLAGEN PEPTIDE PLATFORM<\/p>\n

Hydrolyzed Collagen \u2014 the Functional Peptide Base<\/h2>\n

Hydrolyzed collagen is not intact dermal collagen, but a mixture of collagen-derived peptide fractions whose performance is expressed at the skin-surface level \u2014 hydration, film formation, and conditioning.<\/p>\n

Functional Highlights<\/b><\/p>\n

\u203a Hygroscopic amino-acid and peptide functional groups\u3000\u203a Interaction with skin-surface water\u3000\u203a Film-forming potential and surface affinity\u3000\u203a Softness and conditioned after-feel\u3000\u203a Hair-fiber affinity and anti-static performance\u3000\u203a Established cosmetic biomaterial compatibility<\/p>\n

<\/p>\n

Figure 04 \u2014 Peptide fraction distribution of hydrolyzed collagen (schematic). Topically applied hydrolyzed collagen does not rebuild the dermal collagen network.<\/p>\n

“Hydrolyzed collagen acts mainly at the cosmetic contact interface \u2014 supporting hydration, conditioning, and surface quality.”<\/b><\/p>\n

Aguirre-Cruz G, et al. Antioxidants (Basel). 2020;9(2):181. PMID: 32098294.<\/p>\n

02 \u00b7 COLLAGEN PEPTIDE PLATFORM<\/p>\n

Water Management in the Stratum Corneum<\/h2>\n

<\/p>\n

Figure 05 \u2014 The “brick-and-mortar” model of the stratum corneum with a peptide-rich hydrating surface film (schematic).<\/p>\n

Benefit Statements<\/b><\/p>\n

\u203a Supports skin hydration\u3000\u203a Enhances softness\u3000\u203a Improves conditioned after-feel\u3000\u203a Helps reduce the perception of dryness and roughness<\/p>\n

1<\/b>\u3000Collagen-derived peptides\u3000\u2192\u30002<\/b>\u3000Water association + surface affinity<\/p>\n

3<\/b>\u3000Hydrated interface\u3000\u2192\u30004<\/b>\u3000Softer \/ smoother skin feel<\/p>\n

A hydrated interface is a surface phenomenon \u2014 peptides associate with water and the stratum corneum to improve the conditioned feel of skin.<\/p>\n

Supporting evidence: topical collagen literature \u2014 see References (03).<\/p>\n

03 \u00b7 ZINC FUNCTIONAL PLATFORM<\/p>\n

Zinc \u2014 a Trace Element of Biological Significance<\/h2>\n

Zinc is a multifunctional bio-ion. Its biology spans enzyme catalysis, protein structure, cellular homeostasis, and epidermal function \u2014 a breadth rarely found in a cosmetic mineral ingredient.<\/p>\n

<\/p>\n

Figure 06 \u2014 The zinc biology network relevant to cosmetic science (overview schematic).<\/p>\n

“In cosmetic science, zinc chemistry builds a compelling bridge between skin-surface management and cellular stress biology.”<\/b><\/p>\n

This page is presented as biological background for cosmetic innovation \u2014 not as medical dermatology.<\/p>\n

03 \u00b7 ZINC FUNCTIONAL PLATFORM<\/p>\n

Zinc and Dermal-Matrix Stress Biology<\/h2>\n

Mechanistic evidence from a related zinc salt \u2014 in vitro human dermal fibroblasts: mechanistic context for zinc, not ingredient-specific data<\/p>\n

<\/p>\n

Figure 07 \u2014 UVA \/ AP-1 \/ MMP-1 pathway and zinc intervention nodes, redrawn from the cited literature.<\/p>\n

“Appropriately delivered zinc can engage pathways related to collagen homeostasis and photo-stress biology.”<\/b><\/p>\n

Takino Y, Okura F, Kitazawa M, Iwasaki K, Tagami H. Int J Cosmet Sci. 2012;34(1):23\u201328. doi:10.1111\/j.1468-2494.2011.00676.x \u2014 the study used zinc pyrrolidone carboxylate (Zinc PCA), not zinc hydrolyzed collagen.<\/p>\n

04 \u00b7 DIRECT INGREDIENT EVIDENCE<\/p>\n

Direct Evidence for Zinc Hydrolyzed Collagen<\/h2>\n

KR20250138932A<\/b><\/p>\n

Cosmetic composition comprising hydrolyzed collagen and zinc<\/p>\n

Published September 23, 2025 \u00b7 cited by publication number only<\/p>\n

The patent explicitly describes zinc hydrolyzed collagen and benchmarks it directly against hydrolyzed collagen in paired toner, serum, and cream formulations \u2014 reporting superior oil-control and pore-related performance at equal addition levels.<\/p>\n

Experimental Design<\/b><\/p>\n

Zinc hydrolyzed collagen\u3000vs\u3000hydrolyzed collagen<\/b> \u2014 tested across formulation formats: toner \u00b7 serum \u00b7 cream<\/p>\n

Addition levels evaluated (as % of the tested collagen composition): 0.1% \u00b7 1% \u00b7 3% \u00b7 10%<\/b><\/p>\n

Compared with matched hydrolyzed-collagen formulas at equal levels, the zinc hydrolyzed collagen formulas performed better on oil-control and pore-related measures.<\/p>\n

One of the strongest pieces of ingredient-level direct evidence in this dossier.<\/b><\/p>\n

Applicant information deliberately omitted; this dossier cites the patent literature by publication number only.<\/p>\n

04 \u00b7 DIRECT INGREDIENT EVIDENCE<\/p>\n

Sebum Balance \u2014 Direct Ingredient Evidence<\/h2>\n

Formula-comparison data reported in the patent<\/p>\n

Method \u2014 as reported in the patent<\/b><\/p>\n

1<\/b>\u3000Full-face imaging under standardized conditions\u3000\u30002<\/b>\u3000T-zone selected for sebum-related analysis<\/p>\n

3<\/b>\u3000ZnHC formula versus matched hydrolyzed-collagen formula\u3000\u30004<\/b>\u3000Toner, serum, and cream formats evaluated in parallel<\/p>\n

<\/p>\n

Figure 08 \u2014 Directional schematic drawn from the comparative sebum evaluation reported in Figure 1 of KR20250138932A. Effect direction per the patent report; axis values not reproduced.<\/p>\n

“Across toner, serum, and cream architectures, zinc binding moves hydrolyzed collagen beyond a conditioning position toward a broader oil-balance platform.”<\/b><\/p>\n

04 \u00b7 DIRECT INGREDIENT EVIDENCE<\/p>\n

Visible Pore Care \u2014 a Differentiated Skin Opportunity<\/h2>\n

<\/p>\n

Figure 09 \u2014 Directional schematic drawn from the pore evaluation reported in Figure 2 of KR20250138932A. Effect direction per the patent report; axis values not reproduced.<\/p>\n

Method \u2014 as reported in the patent<\/b><\/p>\n

1<\/b>\u3000Full-face imaging before \/ after product use\u3000\u30002<\/b>\u3000Cheek and nose regions analyzed<\/p>\n

3<\/b>\u3000Pore-related image metrics evaluated\u3000\u30004<\/b>\u3000ZnHC versus matched hydrolyzed-collagen formulas<\/p>\n

From hydration\u3000\u2192\u3000hydration + pore appearance + sebum balance<\/b><\/p>\n

Cosmetic Benefit Statements<\/b><\/p>\n

\u203a Visible pore refinement\u3000\u203a Finer-looking skin texture\u3000\u203a Oil-balance support\u3000\u203a A more refined skin appearance<\/p>\n

Cosmetic appearance positioning only \u2014 no therapeutic claims such as acne treatment.<\/b><\/p>\n

04 \u00b7 DIRECT INGREDIENT EVIDENCE<\/p>\n

How Zinc Rewrites the Hydrolyzed-Collagen Story<\/h2>\n

“From passive conditioning to multifunctional conditioning.”<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Functional Dimension<\/th>\nHydrolyzed collagen<\/th>\nZinc hydrolyzed collagen<\/th>\n<\/tr>\n
Hydration & water support<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
Surface conditioning & film formation<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
Softness & smoothness<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
Hair-fiber affinity<\/td>\n\u25cf<\/td>\n\u25cf<\/td>\n<\/tr>\n
Sebum-management opportunity<\/td>\n\u2014<\/td>\n\u25cf<\/td>\n<\/tr>\n
Visible pore-care positioning<\/td>\n\u2014<\/td>\n\u25cf<\/td>\n<\/tr>\n
Zinc-related biological significance<\/td>\n\u2014<\/td>\n\u25cf<\/td>\n<\/tr>\n
Skin + scalp multifunctionality<\/td>\n\u2014<\/td>\n\u25cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The added dimensions are evidence-driven \u2014 anchored in the KR20250138932A comparison data and the zinc mechanism literature, not in claim language.<\/p>\n

05 \u00b7 PORE & TEXTURE CARE<\/p>\n

Pore Care Is More Than “Astringency”<\/h2>\n

Five factors behind visible pores<\/p>\n

01\u3000Sebaceous gland activity<\/b> \u2014 the flux of oil through the follicle<\/p>\n

02\u3000Surface topography<\/b> \u2014 light reflection and micro-texture<\/p>\n

03\u3000Hydration status<\/b> \u2014 stratum-corneum hydration and surface plumpness<\/p>\n

04\u3000Elasticity & structural support<\/b> \u2014 firmness and recoil around the follicle<\/p>\n

05\u3000Follicle structure<\/b> \u2014 the size, shape, and density of pore openings<\/p>\n

<\/p>\n

Figure 10 \u2014 Follicle cross-section (schematic). Pore appearance is managed at the surface level; no permanent anatomical change is claimed.<\/p>\n

Where ZnHC Fits<\/b><\/p>\n

Sebum balance + surface conditioning + hydration + skin texture<\/p>\n

\u2713\u3000”Helps refine the appearance of visible pores”\u3000\u3000\u2715\u3000”Closes pores”<\/p>\n

Positioning targets the cosmetic appearance of pores \u2014 not permanent pore reduction.<\/p>\n

05 \u00b7 PORE & TEXTURE CARE<\/p>\n

A Texture Platform for Combination and Oily Skin<\/h2>\n

Translating scientific language into formulation and marketing language<\/p>\n

Target Skin Profiles<\/b><\/p>\n

Oily \u00b7 combination \u00b7 visible pores \u00b7 rough texture \u00b7 dehydrated-oily \u00b7 urban-stressed skin<\/p>\n

Balance<\/b>\u3000Sebum-balance support in oily zones<\/p>\n

Refine<\/b>\u3000Refinement of visible pores and texture<\/p>\n

Hydrate<\/b>\u3000Peptide-based water management<\/p>\n

Smooth<\/b>\u3000A softer, smoother conditioned skin feel<\/p>\n

Product Concepts for Formulators<\/b><\/p>\n

\u203a Pore-refining serum\u3000\u203a Balancing serum\u3000\u203a Lightweight gel-cream\u3000\u203a Hydrating oil-control toner\u3000\u203a Texture-conditioning treatment\u3000\u203a Post-cleanse conditioning essence<\/p>\n

Positioning language stays B2B and cosmetic in nature; final claims depend on the finished formulation.<\/p>\n

06 \u00b7 HAIR-FIBER CONDITIONING<\/p>\n

From Skin to Hair \u2014 Why Protein Affinity Matters<\/h2>\n

“Hydrolyzed proteins are valued in hair care because low-molecular-weight peptide fractions can interact with damaged keratin surfaces.”<\/b><\/p>\n

Damaged cuticle<\/b> \u2014 bleaching, heat, and combing lift and erode the cuticle scales.<\/p>\n

Peptide adsorption<\/b> \u2014 peptide fractions preferentially adsorb at damaged surface sites.<\/p>\n

Conditioned surface<\/b> \u2014 a conditioned surface with improved feel and manageability.<\/p>\n

<\/p>\n

Figure 11 \u2014 Peptide affinity at the damaged cuticle (schematic).<\/p>\n

Classic substantivity evidence: Turowski A, et al. Substantivity to hair and skin of 125I-labelled collagen hydrolysates under application-simulating conditions. Int J Cosmet Sci. 1985;7:71\u201384. doi:10.1111\/j.1467-2494.1985.tb00398.x<\/p>\n

Surface adsorption is a cosmetic conditioning mechanism \u2014 not permanent structural repair.<\/b><\/p>\n

06 \u00b7 HAIR-FIBER CONDITIONING<\/p>\n

Hair-Fiber Conditioning \u2014 Surface Science in Practice<\/h2>\n

<\/p>\n

Figure 12 \u2014 SEM-style cuticle schematic (redrawn illustration, not micrograph data). Peptide deposition preferentially occurs at damaged sites.<\/p>\n

Protein-hydrolysate conditioning is a surface materials-science question \u2014 deposition, affinity, and film behavior at the fiber surface, unrelated to follicle biology.<\/p>\n

Conditioning Outcomes<\/b><\/p>\n

\u203a Anti-static conditioning\u3000\u203a Improved surface feel\u3000\u203a Reduced roughness\u3000\u203a Better combability\u3000\u203a Softness and shine potential\u3000\u203a Conditioning of damaged hair<\/p>\n

Outcomes Are Modulated By<\/b><\/p>\n

Molecular-weight distribution \u00b7 peptide charge and degree of fiber damage \u00b7 formulation environment \u00b7 rinse-off versus leave-on contact<\/p>\n

06 \u00b7 HAIR-FIBER CONDITIONING<\/p>\n

Damaged Hair Needs More Conditioning<\/h2>\n

Processing & Treatment Stressors<\/b><\/p>\n

Bleaching \u00b7 coloring \u00b7 perming \u00b7 heat \u00b7 UV \u00b7 mechanical combing<\/p>\n

What Increases at the Fiber Surface<\/b><\/p>\n

Cuticle irregularity \u00b7 surface friction \u00b7 porosity \u00b7 protein loss \u00b7 static charge \u00b7 roughness<\/p>\n

The Conditioning Response<\/b><\/p>\n

Peptide-rich conditioning<\/b> \u2014 preferential interaction with damaged surfaces<\/p>\n

Improvement in cosmetic surface quality<\/p>\n

Supported by the peer-reviewed hair-fiber conditioning literature (see References). Oral collagen-supplementation studies are not used as evidence for topical hair-fiber claims.<\/p>\n

07 \u00b7 SCALP & PORTFOLIO<\/p>\n

Scalp Care \u2014 Where Skin Science Meets Hair Science<\/h2>\n

“The scalp is skin \u2014 with an active sebaceous environment.”<\/b><\/p>\n

<\/p>\n

Figure 13 \u2014 Scalp mechanism map: four converging care pathways.<\/p>\n

Positioning<\/b><\/p>\n

\u203a Oily-scalp care\u3000\u203a Scalp hydration\u3000\u203a Scalp conditioning\u3000\u203a Sebum-balance concepts\u3000\u203a Scalp comfort\u3000\u203a Hair-root environment<\/p>\n

Potential Applications<\/b><\/p>\n

Scalp serums \u00b7 shampoos \u00b7 scalp treatments \u00b7 conditioners \u00b7 hair masks \u00b7 leave-on care<\/p>\n

No claims are made regarding the treatment of seborrheic dermatitis, hair loss, or dandruff.<\/b><\/p>\n

07 \u00b7 SCALP & PORTFOLIO \u00b7 SIGNATURE<\/p>\n

One Ingredient \u2014 Two Beauty Territories<\/h2>\n

<\/p>\n

“One peptide\u2013mineral platform connecting skin science and hair science.”<\/b><\/p>\n

08 \u00b7 FORMULATION & EVIDENCE MAP<\/p>\n

Formulation Opportunities<\/h2>\n

One ingredient, three formulation territories \u2014 from daily skincare to targeted scalp and hair systems<\/p>\n\n\n\n\n\n\n\n\n\n
Skin Care<\/th>\nScalp Care<\/th>\nHair Care<\/th>\n<\/tr>\n
Toners<\/td>\nScalp essence water<\/td>\nShampoos<\/td>\n<\/tr>\n
Essence waters<\/td>\nScalp serums<\/td>\nConditioners<\/td>\n<\/tr>\n
Serums<\/td>\nBalancing lotions<\/td>\nHair masks<\/td>\n<\/tr>\n
Gel-creams<\/td>\nPre-wash treatments<\/td>\nLeave-in conditioners<\/td>\n<\/tr>\n
Creams<\/td>\n<\/td>\nRepair serums \/ sprays<\/td>\n<\/tr>\n
Masks<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Published Formulation Precedent<\/b><\/p>\n

KR20250138932A evaluated collagen compositions containing zinc hydrolyzed collagen in toner, serum, and cream prototypes at 0.1\u201310% addition. This range is cited as a published precedent only \u2014 it is not the official recommended dosage for PuriActives\u00ae ZnHC. Please refer to PuriPharm technical specifications.<\/p>\n

08 \u00b7 FORMULATION & EVIDENCE MAP<\/p>\n

Formulator’s Scientific Snapshot<\/h2>\n\n\n\n\n\n\n\n\n
Trade name<\/td>\nPuriActives\u00ae ZnHC<\/td>\n<\/tr>\n
INCI<\/td>\nZINC HYDROLYZED COLLAGEN<\/td>\n<\/tr>\n
Product platform<\/td>\nZinc-functionalized collagen-peptide conditioning system<\/td>\n<\/tr>\n
Core benefits<\/td>\nSkin conditioning \u00b7 water support \u00b7 visible pore-care positioning \u00b7 sebum-balance positioning \u00b7 hair-fiber conditioning \u00b7 scalp-care support<\/td>\n<\/tr>\n
Target applications<\/td>\nSkin care \u00b7 scalp care \u00b7 hair care<\/td>\n<\/tr>\n
Evidence platform<\/td>\nDirect patent evidence for zinc hydrolyzed collagen \u00b7 hydrolyzed-collagen literature \u00b7 zinc-mechanism literature \u00b7 hair-substantivity literature<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Technical Specifications<\/b><\/p>\n

pH, solids content, molecular-weight distribution, zinc content, preservation system, appearance, recommended dosage, and stability data are governed by PuriPharm technical documentation. They are deliberately not reproduced in this presentation.<\/p>\n

08 \u00b7 FORMULATION & EVIDENCE MAP<\/p>\n

The Evidence Map \u2014 from Direct Data to Mechanistic Support<\/h2>\n

<\/p>\n

Level 1 \u2014 Direct ZnHC evidence<\/b>\u3000KR20250138932A \u2014 oil-control and pore-related performance in toner, serum, and cream formulations.<\/p>\n

Level 2 \u2014 Hydrolyzed-collagen evidence<\/b>\u3000Topical hydration, surface conditioning, skin and hair substantivity (Aguirre-Cruz 2020; Turowski 1985).<\/p>\n

Level 3 \u2014 Zinc-mechanism evidence<\/b>\u3000Matrix-stress and sebaceous-biology context (Takino 2012 \u2014 Zinc PCA, in vitro).<\/p>\n

Level 4 \u2014 Formulation science<\/b>\u3000Peptide adsorption, hair-fiber interaction, and surface-conditioning science.<\/p>\n

Indirect evidence supports mechanism and ingredient-class context \u2014 it is not clinical proof of finished-product performance.<\/b><\/p>\n

08 \u00b7 FORMULATION & EVIDENCE MAP \u00b7 ONE-PAGE STORY<\/p>\n

PuriActives\u00ae ZnHC \u2014 the Product Story on One Page<\/h2>\n

Condition<\/b> \u2014 collagen-derived peptides support the surface quality of skin and hair.<\/p>\n

Hydrate<\/b> \u2014 a peptide-rich interface supports water retention and softness.<\/p>\n

Balance<\/b> \u2014 zinc functionality extends the platform to sebum and pore care.<\/p>\n

Connect<\/b> \u2014 one ingredient linking skin, scalp, and hair-care innovation.<\/p>\n

“Peptide conditioning, empowered by zinc.”<\/b><\/p>\n

09 \u00b7 REFERENCES<\/p>\n

Scientific References<\/h2>\n

Core literature supporting this dossier, ranked by evidentiary proximity to zinc hydrolyzed collagen<\/p>\n

01<\/b>\u3000KR20250138932A. Cosmetic composition comprising hydrolyzed collagen and zinc. Korean patent publication, September 23, 2025 \u2014 cited by publication number only. Ingredient-level direct evidence: comparative oil-control and pore-related evaluation in toner, serum, and cream formulations.<\/p>\n

02<\/b>\u3000Takino Y, Okura F, Kitazawa M, Iwasaki K, Tagami H. Zinc L-pyrrolidone carboxylate inhibits the UVA-induced production of matrix metalloproteinase-1 by in vitro cultured skin fibroblasts, whereas it enhances their collagen synthesis. International Journal of Cosmetic Science. 2012;34(1):23\u201328. doi:10.1111\/j.1468-2494.2011.00676.x<\/p>\n

03<\/b>\u3000Aguirre-Cruz G, Le\u00f3n-L\u00f3pez A, Cruz-G\u00f3mez V, Jim\u00e9nez-Alvarado R, Aguirre-\u00c1lvarez G. Collagen Hydrolysates for Skin Protection: Oral Administration and Topical Formulation. Antioxidants (Basel). 2020;9(2):181. doi:10.3390\/antiox9020181. PMID: 32098294<\/p>\n

04<\/b>\u3000Turowski A, et al. Substantivity to hair and skin of 125I-labelled collagen hydrolysates under application-simulating conditions. International Journal of Cosmetic Science. 1985;7:71\u201384. doi:10.1111\/j.1467-2494.1985.tb00398.x<\/p>\n

05<\/b>\u3000Burnett CL, Bergfeld WF, Belsito DV, et al. Safety Assessment of Skin and Connective Tissue-Derived Proteins and Peptides as Used in Cosmetics. International Journal of Toxicology. 2022. doi:10.1177\/10915818221104783<\/p>\n

For further literature on topical collagen hydrolysates, zinc biology, and hair surface science, see the complete PuriPharm technical dossier.<\/p>\n

PuriActives\u00ae\uff5cProduced by PuriPharm Co. Ltd.<\/p>\n","protected":false},"excerpt":{"rendered":"

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