- Water-soluble silicones are okay to use on a co-wash only regimen, avoid the rest.
- Slightly soluble silicones don't actually dissolve but they mostly evaporate from hair with the rest washed out by shampoo so they won't build up as badly as non-soluble silicones on a co-wash regimen. If use a gentle sulfate-free shampoo you should be able to use both these and the water-soluble silicones. I would personally avoid these on a co-wash regimen to be on the safe side but if you want, try the product that contains slightly soluble silicones and if it's well for you continue using it.
- Non-soluble silicones do not dissolve in water. Only use these if you use sulfate shampoos or the stronger sulfate-free shampoos. As a rule of thumb I would say that If your sulfate-free shampoo does not foam up it is too weak for non-soluble silicones.
Water-soluble (Will not buildup on hair; can be washed out with just water)
- Dimethicone copolyol
- Hydrolyzed wheat protein (hydroxypropyl polysiloxane)
- Lauryl methicone copolyol
- Silicones with PEG listed before it
Slightly soluble / evaporate from hair (May buildup in hair; can usually be co-washed out)
- Behenoxy dimethicone
- Stearoxy dimethicone
Not water-soluble (Will buildup in hair and need a sulfate shampoo to be washed out)
- Cetearyl methicone
- Cetyl dimethicone
- Phenyl Trimethicone
- Stearyl dimethicone
- What Are The Advantages And Disadvantages Of Silicones To Natural Hair?
- Why Isn't Your Natural Hair Looking Shiny?
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