ALPHA-TERPINENE

ALPHA-TERPINENE

Moderate hazard

Is ALPHA-TERPINENE safe in skincare?

Moderate hazardHazard 6/10

EU CosIng Annex III / EU fragrance allergen, Korea (MFDS) bans it in cosmetics only when the peroxide value is above 10 mmol/L

Based on

  • Reference: European Union, 2026

    Annex III · EU Cosmetics Regulation Annex III, entry 131: permitted only under the listed conditions. Conditions: The presence of the substance shall be indicated in the list of ingredients referred to in Article 19(1), point (g), when its concentration exceeds: — 0,001 % in leave-on products — 0,01 % in rinse-off products. The peroxide value shall be less than 10 mmoles/L (This limit applies to the substance a

  • Reference: Korea MFDS

    MFDS Korea: prohibited · MFDS Korea cosmetic prohibited — only when the peroxide value is above 10 mmol/L

  • Reference: European Commission

    Allergy risk: medium · Contact allergy risk grade: medium

Is ALPHA-TERPINENE classified as a carcinogen?

Only four bodies count here: IARC, EU CLP, US NTP and California Prop 65.

Not classified by IARC, EU CLP, US NTP, or California Prop 65.

How is ALPHA-TERPINENE regulated?

Cosmetic ingredient

Not found on any prescription-drug, professional-treatment, or US OTC monograph list, so it is treated as a cosmetic ingredient. This is a passive default ("not on any known restricted list"), not an individually verified positive finding.

Products that list this ingredient

13 products in our catalog list this ingredient. Here are the 12 with the most reviews.

Sources (3)

  • Reference: European Union, 2026
  • Reference: Korea MFDS
  • Reference: European Commission

Red does not mean poison. Preservatives that stop a product going off, UV filters and fragrance can land on yellow or red depending on their score.

Green does not mean right for you. Skin and allergies differ from person to person. Treat the color as a starting point.