Rosin / Colophonium / Colophane

Rosin / Colophonium / Colophane is a solid resin obtained from pine trees, refined to create rosin used in coatings and cosmetics as a film-former or tackifier. It's chosen to improve adhesion, grip, and surface sheen in items like mascaras, hair styling aids, and depilatory waxes.
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Ingredient Snapshot

Overview
Pine resin that helps mascara and lash products grip and shine.
Category
Tone/Texture
Type
Film Former

Ingredient Ratings

Overall Rating

Poor

Comedogenic Risk

None

Skin Benefits

Improves grip and wear, helping products stay in place longer, and can provide a shiny, uniform finish on hair or lashes.

Uses In Skincare & Cosmetics

Used in lash formulas, brow gels, and hair pomades, and also found in peel-off masks and wax strips for depilation.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

A known contact allergen that may trigger dermatitis, especially with prolonged or occlusive use such as waxes or adhesives. Those with sensitive, reactive, or damaged skin should avoid it or patch test and discontinue if redness or itching occurs.

Is Rosin / Colophonium / Colophane a Good Ingredient?

Poor, because despite being useful for film-forming and adhesion, it has a well-documented high sensitization and irritation risk, making it unsuitable for many sensitive or eczema-prone users. The functional benefit rarely outweighs that reactivity risk in leave-on skin products, which is why it doesn't clear even a Fair rating.

Products with Rosin / Colophonium / Colophane

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