Herbal extracts for skin firming: Sommerfeld reports1 on the clinical efficacy of a blendaof herbal extracts—including Rosmarinus officinalis (rosemary), Centella asiatica (gotu kola), Curcuma longa (turmeric) and dimethylaminoethanol (DMAE)—to promote skin firmness. The blend was tested for firming and elasticity benefits in photo-aged facial skin via a randomized, placebo-controlled, double-blind, split-face study in 28 women aged 34–67 years. Treatments were administered with the tested blend and a placebo for four weeks. Skin firmness and elasticity were evaluated using the speed of propagation of ultrasound shear waves in the skin as end point. The study was completed by 25 women.
