Suitable Colors for CP/HP Bar Soap Making
Question
What types of colors are suitable for making CP (Cold Process) and HP (Hot Process) bar soaps, considering the high alkalinity and heat involved in the process?
Answer
Hello,
Regarding colors for CP (Cold Process) and HP (Hot Process) bar soaps, which involve high alkalinity and heat, you should choose colors that can withstand alkaline conditions.
According to recommendations, suitable colors are typically found in the Make-Up category, such as:
- Iron Oxides: These are stable inorganic pigments that are highly resistant to alkali and heat.
- Mica Colors: These provide pearlescent or metallic effects. Most are alkali-resistant, but it's best to check the specifications for each color.
- Lake Colors: These are water-soluble synthetic colors often used in various products, including some soaps.
Colors from the general "Cosmetic Color" category may not be able to withstand the high alkalinity in the bar soap making process, which could cause the color to change or fade.
Therefore, for CP and HP soap making, it is recommended to use colors from the Iron Oxides, Mica Colors, and Lake Colors groups that are specified for use in bar soaps.