Posts Tagged ‘L’hydroquinone (HQ)’
Hydroquinone (HQ)
Wednesday, March 21st, 2012Hydroquinone (HQ) Mechanism of action: hydroquinone inhibits activated tyrosinase activity (therefore it does not act on normal skin). A word on available concentrations: 2%: often ineffective 3-5%: good bleaching agent 6-10%: higher concentrations can cause irritation Side effects: Contact dermatitis (Both Allergic and Irritant) Nail Discoloration Exogenous Ochrnosis can rarely occur in dark skin individuals […]