Sunscreens

Yep, it’s that time of year again (at least in the Northern Hemisphere)! It’s time to buy buckets of sunscreen and make sure Mr. Sun doesn’t make us all red and unhappy! We definitely need to be wearing sunscreen!There are two types of sunscreen ingredients – physical blockers and chemical blockers. The physical blockers are titanium … Read more

Question: Polysorbate 20 vs. polysorbate 80

Anonymous posted this question in this post: What’s the difference between polysorbate 80 & 20? Polysorbates are ethoxylates of fatty acids esterified with anhydrosorbitol. Polysorbate 20 is a polyoxyethylene derivative of sorbitan monolaurate whereas polysorbate 80 is a polyoxyethylene derivative of sorbitan and oleic acid. And as much as I love chemistry, I realize this really … Read more

Question: Can you use cetrimonium chloride in a shampoo?

Lalla asks in this post: Can I use cetrimonium chloride in a shampoo? Yes! (Well, that was easy, eh?) But wait, there’s more! Cetrimonium chloride plays well with surfactants, so it’s a great inclusion in a conditioning shampoo (especially one for very tangly hair) and it removes silicones well, so it’s a great inclusion in a … Read more

Question: Can you substitute laureth-3 for laureth-4?

Anonymous asked…Can i replace Laureth-4 for Laureth-3? I’m trying to do up a oil shower gel & i’m using MIPA –Laureth Sulfate as the suractant…Great question! Let’s take a look at what laureth-4 is, then figure out if it can be substituted by laureth-3. Laureth-3 and -4 are ethers, subcategory alkoxylated alcohols. They are non-ionic … Read more