Tonic

Biotin/Mouse Fibroblast Conditioned Media

INCI: BIOTIN/MOUSE FIBROBLAST CONDITIONED MEDIA

Reviewed by Daisy · Last updated 2 Jun 2026

A laboratory-derived ingredient that may support skin firmness and tone

Best For Skin Types

All, Combination, Mature

Addresses

Fine lines, Pore minimising, Skin firmness

Usage Frequency

Daily

What Is Biotin/Mouse Fibroblast Conditioned Media?

Biotin/Mouse Fibroblast Conditioned Media is a composite ingredient that combines biotin (a B-complex vitamin) with conditioned media derived from mouse fibroblast cell cultures. Conditioned media is the nutrient-rich liquid left behind after cells have been cultured, which contains signalling molecules and growth factors that cells naturally produce.

This ingredient functions primarily as an astringent in skincare formulations, meaning it may help to temporarily tighten the appearance of skin and refine surface texture.

How It Works

Biotin supports keratin production and skin barrier function at a cellular level. The fibroblast conditioned media component contains signalling molecules that may communicate with your skin cells to support natural firmness and elasticity.

The astringent properties create a cosmetic tightening effect on the skin surface, which can temporarily improve skin appearance and texture.

Clinical Evidence & References

Evidence specifically evaluating this combined ingredient in human skin is limited. Biotin is well-established as a B-vitamin with a role in skin health, though clinical studies on topical biotin application show modest results. Fibroblast-derived ingredients are increasingly used in cosmetics based on cellular research, but human clinical data remains sparse.

The astringent function is cosmetic rather than therapeutic, producing temporary visual effects rather than structural changes to the skin.

How to Use

This ingredient is typically found in serums, essences, and treatment products. Apply to clean skin before moisturiser. As with any new ingredient, introduce it gradually to monitor how your skin responds, particularly if you have sensitive skin.

Safety & Precautions

Generally well-tolerated. As with all skincare ingredients, discontinue use if you experience irritation or allergic reaction.

Frequently Asked Questions

From the Clinic

Not sure what your skin actually needs?

Two minutes, a few questions, and we’ll point you at what matters — no guesswork.

Take the skin quiz

Learn More About Skincare Ingredients

Explore our comprehensive ingredient glossary to understand what's in your products.

Browse All Ingredients

Authorised Stockist

Official UK retailer

Tracked Delivery

Free UK shipping over £50

5 Star Rating

Trusted by thousands

Expert Advice

Free consultations