If you choose a color, add soap. กลีเซอรีน due to soap กลีเซอรีน is mostly water. There is very little oil, so choose Iron Oxides Red (non-coated) uncoated pigment not waterproof Which is not waterproof, right? 1. Iron Oxides Red (Ultra-fine, Silane-Coated) Silane-coated, water-resistant/black-pro...