There are Currently two SILK2 sodium relaxer strengths: “Regular Mild” and “Regular Plus”. According to industry standards, both are regular strength relaxers. “SILK2 Regular Mild” is recommended for finer textures and color treated hair. “Regular Plus” is slightly stronger, yet gives you time to work with courser textures.  The Cleansing, Neutralizing, herbal cleansing and ReFeel Conditioning shampoos support the above relaxers.