antimicrobialUnderstated
Mastic Gum
Also known as: Pistacia Lentiscus, Chios Mastic
Medically reviewed by ChokChok · Updated April 15, 2026
The Greek island resin used since antiquity — now in modern acne formulations for its antibacterial effect.
What It Does
AntibacterialAnti-inflammatoryAstringentAntifungal
Deep Dive
Mastic gum is the aromatic resin of Pistacia lentiscus trees, produced exclusively on the Greek island of Chios (protected designation of origin since 2014). Used for oral hygiene and GI complaints in Mediterranean traditional medicine. Modern skincare uses it for anti-inflammatory and antibacterial effects against acne bacteria. Niche but interesting heritage ingredient.
Best For
Acne-ProneCombinationOily
Pairs Well With
Effective Concentration
0.1–5%. Specific to Greek island of Chios under EU protection.