cetyl alcohol, although they will offer different qualities from the fatty alcohol.
Cetyl esters have an HLB of 10 - whereas cetyl alcohol has an HLB of 15.5 - and they can take up to 2 days to full thicken your lotion or cream. They're often called a replacement for spermacetti or "synthetic spermacetti", but this is kinda irrelevant to us because spermacetti hasn't been used in years, especially by homecrafters! It has a faint odour and bland taste, and is incredibly resistant to rancidity with a shelf life of almost 5 years. Like all the esters we've met so far, they're insoluble in water but soluble in oils. Interestingly enough, cetyl esters are soluble in boiling alcohol, so they might be a suitable ingredient in alcohol based deodorants. They have a melting point of 43˚C to 47˚C. They may or may not be incompatible with strong acids or bases (I found contradictions in this piece of information) and the suggested usage is a 1% to 7% in your oil phase.
You might find cetyl esters under the trade names Crodamol SS, Ritaceti, and Liponate SPS.
Cetyl esters are used a lot in formulating anti-perspirant and lip balms commercially because of that bland taste and anti-tack properties. They can be used in place of cetyl alcohol in conditioners - they offer slightly less conditioning but they will make the conditioners thinner, which is kind of a bonus if you're using 7% BTMS-50!
Using cetyl esters in a lotion or cream in the place of cetyl alcohol will give you a glidier, silkier feeling and a thinner product.
An important note: In products where I've combined cetearyl ethylhexanoate and cetyl esters, I got a weird synthetic smell from vanilla based fragrances. I have tested both the cetearyl ethylhexanoate and the cetyl esters and have come to the conclusion that it's the cetyl esters. (I don't know why this is!) So please use caution when using these esters with anything that contains vanilla!
Join me tomorrow for formulating fun with cetyl esters!