pH

Q&A: Making and using citric acid and 18% sodium hydroxide solutions?

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In the May Q&A, Sarah commented, I have some questions!!! 1) Regarding changing pH; can I make and bottle a 50% citric acid solution and an 18% sodium hydroxide solution or do I need to make it fresh each time? 2) If bottling, does it need a preservative with the extreme acidity/alkalinity? 3) How long will each last...

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Misconceptions about pH: It isn’t a series of steps

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I shared this on my blog Facebook page, but didn’t share it here. Sorry about that. I encourage you to check out some of the comments as there are some interesting ones, and some from my bestest ever friend, Hamsa Ryuugan posing as Claudia Celeron. (He’s blocked me, which is just so sad and pathetic,...

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Q&A: Do oils have a pH? Can we test the pH of an anhydrous product? If so, what’s the procedure? And a little on pH meters… 

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In the October Q&A, Michelle asked: I am wondering if one can test the pH of an anhydrous product? I am making a lovely anhydrous deodorant and would like to proceed with some testing/data gathering. Which meter would be most useful? I have the Jenco Vision Plus but products need to be diluted in water for...

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Q&A: Wondering about the use of lye/sodium hydroxide in lotion or cream formulas? 

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In September Q&A post, tessarex asked, I’m wondering about the use of lye/sodium hydroxide in lotion/cream formulas. I’m curious because I’ve got a friend using Vicco’s Turmeric Cream, which lists its ingredient as – Active Ingredients: Turmeric 16%, Sandalwood oil .5% Cream Base: Stearic acid, Sorbitol, Methyl Paraben, Propyl Paraben, Sodium Hydroxide, Water. It’s probably not...

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Q&A: pH meters and the pH of lotions, including Lush’s Dream Cream

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In the July Q&A, Kh asked, I just got a pH meter (from Lotioncrafter) (I think I even chased my cat around with it) and now I know the pH of everything in my house. But I was surprised to find that the toner and lotion I measured came out around 4.5 – anyway, I didn’t use...

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