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

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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Member exclusive Q&A: What’s the recommended pH range for hair care products?

In the December Q&A on Patreon, Marta asked: What is the lowest recommended pH for hair care products?  I’ve made your Varisoft EQ65 Basic Conditioner (Shiny Things, Volume 1; pg 30) twice (plus other ingredients of course).  (Yes, Varisoft EQ 65 is incredible.  I plan on using it in all conditioners from now on.)  Without...

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