Trans-Epidermal Water Loss
Trans Epidermal Water Loss (or TEWL) is the rate at which your skin loses moisture, a factor notoriously difficult to quantify – and frequently the source of both dryness and oiliness. One of the many concerns we hear is that the skin may be dry but also too oily. Ever wondered about this paradox? Often, dryness and oiliness coincide as the skin works to compensate for high level moisture loss, that is, your skin could be well-hydrated but losing too much water through evaporation. By assessing the incidence of TEWL we can right this balance with adjustments to your moisturising and skincare routine. If your TEWL readings are high we can advise on skin care that not only hydrates the skin but also protects it with a layer on top to prevent high TEWL – rectifying the problem of ‘dryness’.