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Evaluation of a prescription strength 4% hydroquinone/10% L-ascorbic acid treatment system for normal to oily skin.
Bruce S, Watson J. Bruce S, et al. J Drugs Dermatol. 2011 Dec;10(12):1455-61. J Drugs Dermatol. 2011. PMID: 22134571 Clinical Trial.
INTRODUCTION: A 4% hydroquinone/10% L-ascorbic acid treatment system aims to treat early signs of photodamage in normal to oily skin and help prevent further photodamage. The system also contains vitamin E, witch hazel, aloe barbadensis leaf juice, penetration-enhancing in …
INTRODUCTION: A 4% hydroquinone/10% L-ascorbic acid treatment system aims to treat early signs of photodamage in normal to oily skin …
Sun protection strength of a hydroquinone 4%/retinol 0.3% preparation containing sunscreens.
Stanfield JW, Feldman SR, Levitt J. Stanfield JW, et al. J Drugs Dermatol. 2006 Apr;5(4):321-4. J Drugs Dermatol. 2006. PMID: 16673798 Clinical Trial.
METHODS: We tested the sun protection factor of a hydroquinone formulation (Lustra-Ultra, TaroPharma, Hawthorne, NY) containing avobenzone 3%, and octinoxate 7.5% according to the FDA Sunscreen Monograph on 20 volunteer subjects. ...The formulation exhibited stronge …
METHODS: We tested the sun protection factor of a hydroquinone formulation (Lustra-Ultra, TaroPharma, Hawthorne, NY) containing avobe …