Vichy Dercos Oil Control Shampoo comprises of the anti-sebum complex which comes from an exclusive mixture of four surfactants especially carefully chosen and carefully balanced to limit the spread of sebum along the hair fibre, preserve the scalp's natural balance and delay oiliness. Rediscover lighter, easy to style hair. The hypoallergenic formula is paraben-free and silicone-free. Its efficacy has been tested under dermatological control.