Question: How can we add a cationic polymer to an anionic product, like shampoo, body wash, or facial cleansers?

I can’t remember who asked it where, but someone asked me: How can we add a positively charged or cationic ingredient like polyquaternium 7 or Honeyquat to a negatively charged or anionic surfactant blend, like a shampoo or body wash? Great question! Let’s recap a bit of the chemistry for a second. (Check out this … Read moreQuestion: How can we add a cationic polymer to an anionic product, like shampoo, body wash, or facial cleansers?

Question: What is the meaning of positive or negative charge? Cationic, anionic, and non-ionic charges

In this post, How can we adapt our formulas to be more natural: Gelling agents, Catherin asked: What is the meaning of positive and negative charge? I wrote about this topic in this post on the blog – Anionic, cationic, and non-ionic – but I realized I’ve learned so much since 2011 and there are … Read moreQuestion: What is the meaning of positive or negative charge? Cationic, anionic, and non-ionic charges

Weekday Wonderings: Using polysorbates and separation? Exact recipe?

In this post, using polysorbates in your products, Lisa asks: I’ve tried the bath oil recipe, but I noticed that the polysorbate 80 starts to separate from the oil after letting it sit for a while. Everytime I want to use it, I have to shake it up. Is there anything I can add to prevent … Read moreWeekday Wonderings: Using polysorbates and separation? Exact recipe?

Chemistry Thursday: The difference between solubilizers and emulsifiers redux

In this post on solubilizers, someone asked: I still don’t get the difference between a solubilizer and a emulsifier. If I mix propylene glycol (in substitution for the surfactant), cetyl alcohol or stearic acid in water, will I be getting a lotion?  The quick answer is no because there’s nothing in your question that is … Read moreChemistry Thursday: The difference between solubilizers and emulsifiers redux

Weekend Wonderings: Difference between carbomer vs. acrylates/C10-30 alkyl acrylate crosspolymer? What conditioner can I use for very fine hair? What’s the difference between dilution and ratio?

Still suffering from this horrible cold, although my throat is feeling better and my skin doesn’t hurt so much. I keep drinking vast quantities of chicken soup and honey & lemon tea and spraying my throat with echinacea while sucking on zinc tablets, and I think it’s all working. I’m sure the rest isn’t hurting … Read moreWeekend Wonderings: Difference between carbomer vs. acrylates/C10-30 alkyl acrylate crosspolymer? What conditioner can I use for very fine hair? What’s the difference between dilution and ratio?