Clinique claims that 'mnemonic' technology has enabled it to be one step ahead of its competitors with its new liquid-cream moisturiser. Moisture On-Call triggers the skin's ability to retain moisture by revitalising its crucial moisture barrier. The barrier incorporates hydro-retentive lipids which are released by cells migrating to the skin's surface. A healthy moisture barrier cushions the skin and prevents potential irritants penetrating and causing premature wrinkles. Clinique's mnemonic technology involves a plant extract that spurs cell growth to increase lipid production to the optimal level and reminds skin to call on its own lipid resources and re-establish a strong moisture barrier. This leads to long-term internal hydration. For working women who have no time for special facials to give intense hydration, Sonia Rykiel has introduced a special skin treatment. Moisture Cream Mask is especially beneficial for dry skin or skin that has become dry owing to variations in climate. Manageress Candy Chiu said: 'It relaxes and softens the skin and makes it more receptive to moisturiser at night so the ingredients penetrate more easily.' It contains Sonia Rykiel's special moisturising and softening complex, plus gentle grape-seed oil which is rich in fatty acids to strengthen the skin's protective barriers and reduce moisture loss. Althea extracts further soften and protect the skin. Ms Chiu advised using the mask as a preventative treatment at night before moisturising, to avoid dry or irritated skin in cold spells.