Trial conducted by Prof. Dr. J Wiechers at Rigano Laboratories, Milan, Italy.
To evaluate whether Bio‑Oil Skincare Oil demonstrates a similar occlusivity level to vernix caseosa. Vernix caseosa is widely considered by cosmetic scientists as the ‘gold standard’ in skin moisturisation because of its ideal occlusivity level.
Known quantities of water were placed in beakers covered with a semipermeable membrane called Vitro-Skin™, which mimics the surface properties of human skin. Vernix caseosa and Bio-Oil Skincare Oil were applied to the membrane and the rate of water loss from the beaker was measured over time. This was compared with the rate of water loss without any product on the membrane. The water vapour transfer rate for each product was calculated and expressed in g/m2/h.
Bio-Oil Skincare Oil demonstrated a very similar occlusivity level to vernix
caseosa, registering 23.5 compared to vernix caseosa’s 27.2.