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CALF SKIN EXTRACT.

Valuable CAS 91081-63-9 / REFATTING

A nutrient-dense biological extract rich in native growth factors and essential lipids designed to accelerate dermal recovery. It bridges the gap between traditional emollient care and advanced regenerative medicine by stimulating the skin's internal repair mechanisms.

Skin conditioning Biological repair signaling Refatting agent Barrier support

Science

Operates via high-bioavailability signaling molecules, specifically EGF, VEGF, and PDGF, which dock onto cell receptors to activate fibroblast proliferation. This process triggers the synthesis of new collagen and hyaluronic acid while simultaneously restoring the lipid barrier through its natural refatting properties.


Research

High confidence
Effective range 0.1–5%
Optimal

3%

Key findings

  1. 01 Demonstrated biostimulation of the extracellular matrix, significantly increasing structural proteins and glycosaminoglycans for enhanced elasticity.
  2. 02 Proven efficacy in 45-day trials as a transdermal facilitator, reducing wrinkle depth by improving the delivery of high-molecular-weight actives.

Transparency

Commonly dusted
Min. effective
1%
Red flag below
0.5%

Due to its high cost and complex sourcing, many formulations include it at 'label claim' levels below 0.5%, which is insufficient to trigger the growth factor pathways identified in clinical patents.


The Formula

Solubility
Water
Optimal pH 5 – 7.5
0 7 14

Stability

Thermally labile; biological activity degrades rapidly if exposed to temperatures exceeding 50°C. Requires precise pH control to prevent protein denaturation.

Synergies

  • Hyaluronic Acid
  • Non-proteolytic peptides
  • Ceramides

Conflicts

  • Strong acids (AHA/BHA)
  • Proteolytic enzymes
  • Heavy metals
  • High heat processing

Safety

CIR Status
Not reviewed
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

Must be sourced from certified BSE-free regions and comply with FDA 21 CFR 700.27 and EU Annex II regulations regarding bovine-derived materials.


Your Skin

Yes Normal
Yes Dry
No Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A potent bio-active for age reversal and barrier repair, provided it is formulated cold and used at therapeutic concentrations.


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