ph level

Does anyone test the PH of their lotions and creams? Just saw a video were that was suggested. Apparently, preservatives can cause lotions and creams to be acidic. The presenter's cream was less than 4 (tested with a meter) so she added a lye solution to bring it up to a little over 5 PH. Just...

Hello everyone, What is your experience with soap PH? How much does it matter and how does it influence the soap? Also, do you find that shampoo bars should have a different PH than body soap bars? And how do you measure PH? If the water is harder, has a different PH and also the resunting...

I'm new to soaping and have read that you should test the PH of your soaps. A lot of what I've read on this site mentions the 'zap' test. What is that and how do you perform it? I also read about some chemical (can't remember the name now but I think it started with a 'T') was also useful in...

I tried for the first time to make liquid soap, I've used hot process a long time and I never had any problem.... since, I tried to meet the monster of LIQUIDS.... I calculated and measured my ingredients right, I didn't superfat at all, I cooked for almost 4 hours but when it came at vaseline...