Ethylhexylglycerin

Generally well tolerated at standard cosmetic concentrations (0.3–1.0%). At higher concentrations — above 2% in leave-on products or above 8% in rinse-off products — there is a risk of skin irritation, redness, and stinging. Rare cases of contact dermatitis have been reported, even in products marketed as hypoallergenic. Patch testing is advised for those with sensitive skin or known preservative sensitivities. Not listed under EU Annex II (banned) or Annex III (restricted); no specific concentration cap is mandated by EU Regulation 1223/2009.

Current research shows no reproductive or developmental toxicity associated with ethylhexylglycerin at standard topical cosmetic concentrations. No pregnancy-specific concerns are documented in EWG Skin Deep (hazard score: 1) or CIR safety assessments. As with all topical cosmetics, avoiding high-concentration professional-grade applications is prudent, but standard leave-on and rinse-off formulations are considered safe.