And check out Simone's experiments with turning a liquid gel eye liner sealant into a liquid gel eye liner! I can't wait to try all kinds of crazy new colours this weekend!
In this post on cyclomethicone, Lisa asks: I read your section about soaping effect in lotions. I ended up purchasing dimethicone, and I will be testing that out. I like that cyclomethicone imparts a dry, silky feel in skin and hair products. Do you think I can use cyclomethicone in place of dimeethicone? Will Cyclomethicone help with the soaping effect?
First, let's take a look at the soaping effect. This is when your lotion goes on white and stays white on your skin for a bit. Why is this happening? It's saponification!
The fatty acids in the lotion, combined with an alkaline ingredient like triethanolamine or potassium hydroxide, create a soap, which acts as the emulsifier in your lotion. (A common combination is triethanolamine and stearic acid.) If you're using a stearate or oleate based emulsifier, you are bringing the water and oil together in your lotion by creating a soap, which is going to leave those white streaks when you apply it. This can happen when you're using stearic acid on its own.
How to get rid of it? Use a non-ionic emulsifier like Polawax, e-mulsifying wax, Lotionpro 165 or a cationic emulsifer like Incroquat BTMS-50. Avoid stearic acid. Or add dimethicone at 2% to 3%.
Cyclomethicone is another silicone, but it's not the same as dimethicone, so it won't get rid of the soaping effect in your products. It's not a direct replacement for dimethicone, but then again, nothing really is. (Yes, I know there are dimethicone replacements like bamboo isoflavones, but nothing really matches it for awesome-ness. Just like you can't find a replacement for kukui nut oil or babassu oil!)