pH

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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Member exclusive Q&A: What should be the pH of our finished products for fruit acid complex?

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In the January Q&A, Marta asked: What is the recommended pH for a facial product containing fruit acid complex or willow bark extract? You have discussed concerns about a pH being too low in formulations containing (straight) alpha hydroxy acids or salicylic acid. Yet, should one be reducing the pH in a product containing fruit acid...

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Do you need to measure the pH of your products? If so, do you need a meter, or can the strips work just as well?

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We took a look at various pH meters yesterday, so let’s ask the most important question of all today – Do you need a pH meter? And what’s the advantage of using a pH meter over pH strips? The first question should be – Do you need to measure the pH of your products? If you’re making...

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