Medlief CBD In beauty testing, EFAs had been shown to play a preventive function in the skin ageing process. The outflow of moisture from the body is regulated by means of a barrier which the skin forms to protect itself from the outside surroundings. EFAs, especially Omega-6 and GLA, preserve the barrier function of cellular membranes. Skin which is poor in those nutrients lets in greater moisture loss and can show dryness and loss of elasticity. PUFAs have additionally been shown to prevent skin dryness and to assist repair broken pores and skin to normal.