Pistacia lentiscus (Mastic) gum
AKA “Mastic Gum”
Ingredient
Ingredient Facts
Pistacia lentiscus (Mastic) gum
AKA: Mastic Gum
Ingredient · Film Forming · EWG: 1
Plant-Derived Synthetic
Occlusive
Mediterranean
Clean
Pistacia Lentiscus (Mastic) Gum is a cosmetic ingredient used as film forming, masking. Rated low hazard by EWG.
CAS #
61789-92-2
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Masking
Antioxidant
Anti-Inflammatory
Antimicrobial
Creates protective layer
Provides scent
Traditional Use
Used for over 2,000 years in Mediterranean and Middle Eastern medicine and skincare. The resin was valued in ancient Greek and Roman times for its astringent and antimicrobial properties, and was traditionally used in dental and skin preparations.
Skin Types
●all-skin-types, gentle
Best For
Soothing
Pregnancy & Breastfeeding Safe
Yes
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Pistacia Lentiscus (Mastic) Gum
European Commission
EU Cosmetic Ingredient Database (CosIng)
Pistacia Lentiscus (Mastic) Gum
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Traditional uses, phytochemistry and pharmacology of Chios mastic gum (Pistacia lentiscus var. Chia, Anacardiaceae): A review.
Pachi VK, Mikropoulou EV, Gkiouvetidis P, Siafakas K, Argyropoulou A et al.
Journal of ethnopharmacology, 2020
Effects of Chios mastic gum on cardiometabolic risk factors.
Athanasia K Papazafiropoulou
World journal of diabetes, 2022
Verified Jun 2026
Data: Kew POWO · CosIng · EWG · CIR