1. Cosmeceuticals as a third category;Kligman;Cosmet Toilet,1998
2. Topical tretinoin improves photoaged skin. A double-blind vehicle-controlled study;Weiss;JAMA,1998
3. Improvement of naturally aged skin with vitamin A (retinol);Kafi;Arch Dermatol,2007
4. Repair of photoaged dermal matrix by topical application of a cosmetic ‘anti-ageing’ product;Watson;Br J Dermatol,2008
5. Effects of a cosmetic ‘anti-ageing’ product improves photoaged skin;Watson;Br J Dermatol,2009