Biotherm Aquasource Deep Serum Biotherm combines innovation and experience to provide deep-acting moisture for radiant freshness to every skin with Aquasource Deep Serum. Intensively moisturising, refreshing, particularly light and smooth texture Suitable for all skin types Free of parabens. A face serum combines intensive effectiveness with a particularly light texture. After daily facial cleansing, a hazelnut-sized amount can be easily applied to the face in circular movements. Due to its light consistency and its non-greasy properties, the serum is an ideal basis for day make-up. For an even more intensive care effect, the usual day or night care can be applied after the serum. Due to its particularly highly concentrated combination of active ingredients, the serum can also be used without any problems as sole skin care, especially in summer. Research and decades of experience have succeeded in creating a highly concentrated cocktail of active ingredients in Biotherm Aquasource Deep Serum, which moisturises the skin deep down and makes it shine in a completely new light. The concentrated ingredients of the thermal plankton and the patented active ingredient mannose provide the skin with intensive and long-lasting moisture and help it to regenerate itself. For ideal results, the light texture of Biotherm Aquasource Deep Serum can be optimally supplemented with day and night care, providing the skin with ideal nutrition and moisture around the clock. The smooth texture and gentle fragrance gives a particularly soft and nourished skin feeling from the very first application. Thanks to intensively moisturising active ingredients, even dryness lines no longer stand a chance, even in cold, heated air or after sunbathing. For a special freshness kick, the serum can also be applied lightly cooled and thus provides an extra portion of pampering freshness.