Lawsone
2-hydroxynaphthalene-1,4-dione; 2-hydroxy-1,4-naphthoquinone
The active colorant in henna; safe for non-oxidative direct application up to 1.4% Lawsone content per SCCS. Prohibited under oxidative conditions (EU Annex II No. 1309). Black henna containing PPD additives is a separate high-risk product not covered here. May cause hemolysis in G6PD-deficient individuals.
Function & Common Use
Direct Hair Dye / Natural Hair Colorant
Hair Dyes
Natural henna hair dye, natural hair color powder, Ayurvedic hair treatments
Natural (plant-derived, Lawsonia inermis)
Concentration Limits
No specific limit; traditional use; henna widely used
1.4% Lawsone content (as part of henna powder) in non-oxidative direct hair dye; prohibited for use under oxidative conditions (Annex II No. 1309)
No federal limit; FDA permits use as a hair dye ingredient
Restricted; MFDS safety standards apply
Format restriction: Permitted for direct (non-oxidative) application only; EU prohibits combination with hydrogen peroxide or oxidative conditions; not for use in oxidative hair dye systems
Baby restriction: Yes
Pregnancy: No
IFRA: No
Frequently Asked Questions
Is Lawsone safe to use in skincare?
Lawsone has a Medium concern rating. The active colorant in henna; safe for non-oxidative direct application up to 1.4% Lawsone content per SCCS. Prohibited under oxidative conditions (EU Annex II No. 1309). Black henna containing PPD additives is a separate high-risk product not covered here. May cause hemolysis in G6PD-deficient individuals.
Is Lawsone allowed in India?
Lawsone is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is No specific limit; traditional use; henna widely used.
What is Lawsone used for in cosmetics?
Lawsone functions as: Direct Hair Dye / Natural Hair Colorant. It is commonly found in: Natural henna hair dye, natural hair color powder, Ayurvedic hair treatments.
Can Lawsone cause an allergic reaction?
Yes. Lawsone has an allergen flag (Yes). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is Lawsone safe for babies?
Lawsone has baby/child restrictions: Yes. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: Annex III (restricted) / Annex II (banned under oxidative conditions per entry 1309)
Identifiers
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