Methylene glycol has been found to be toxicologically equivalent to formaldehyde, also used in hair-straightening treatments ...

EWG's database lists 63 products containing Lilial, which could be a greatly underestimated figure, given industry secrecy around fragrance ingredients. Lilial is a known ingredient of tub and ...

We no longer formulate with this ingredient. Since January 1, 2022, Olaplex has not sold any products containing butylphenyl methylpropional, also known as lilial, in the EU or UK.” A statement ...