What is Curl Expression? Curl Expression is the first professional care programme developed together with curl experts to provide your curls and waves with optimum moisture. The products in the range contain glycerine, urea and hibiscus seed. Who is Curl Expression for? Curl Expression is for women with wavy, curly and frizzy hair. The s-shaped root of the hair prevents the natural formation of grease on the hair lengths. As a result, the entire curls are less well moisturised. Curl Expression provides precisely this necessary moisture. What are the main ingredients of Curl Expression? The main ingredients of Curl Expression are glycerine, for long-lasting moisture, urea H, for softer hair and hibiscus seed, for more strength, shine and suppleness.