Origin2-Methyl-5-hydroxyethylaminophenol belongs to the aminophenol chemical family, synthesized from petroleum-derived precursors. It is produced through multi-step organic synthesis involving methylation and hydroxyethylation reactions on a phenol base.
5-[(2-hydroxyethyl)amino]-o-cresol
Formula
C9H13NO2
Mol. Weight
167.20
CAS #
55302-96-0
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Functions
Hair Dyeing
Colors Hair
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
6
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Skin Irritant
3 studies / 3 not irritating (CIR 135)
Not Phototoxic
Animal test found no phototoxicity in the CIR safety assessment (CIR 135)
Mixed Sensitization Results
3 studies / 1 sensitizing / 2 not sensitizing / plus 1 case report (CIR 135)
Dermal Absorption 0.025%
hairless rat abdominal skin (epidermis + dermis) / in vitro / dye base with p-phenylenediamine and hydrogen peroxide / 30 min (CIR 135)
murphy