Is CI 42090 fungal acne safe?

Yes, CI 42090 is generally considered safe for fungal acne-prone skin.

Is CI 42090 safe for pregnancy?

Yes, CI 42090 is generally considered safe for use during pregnancy.

Yes, CI 42090 is typically vegan.

Is CI 42090 comedogenic?

No, CI 42090 has a low comedogenic rating of 0/5 and is unlikely to clog pores.

CI 42090

Blue 1Acid Blue 9

Average

Warning

Pores

0/5

Irritancy

1/5

FA Safe

✅ Yes

Pregnancy

✅ Safe

Vegan

✅ Yes

Science & Benefits

CI 42090 is a synthetic triphenylmethane colorant that provides a brilliant blue hue to gel-based moisturizers and cleansers. Scientifically, it is categorized as a non-comedogenic ingredient because it lacks the lipid affinity required to penetrate the sebaceous unit and form a comedo. Like most FD&C dyes, it sits on the surface of the stratum corneum and is easily removed during cleansing. The 'Average' rating stems from its potential as a skin sensitizer; though rare, it can contribute to a 'cumulative irritation' profile when combined with fragrances and drying alcohols. For acne-prone users, it is a safe aesthetic choice, though it offers no functional skin-health benefits.