Couple questions about gluconolactone, for it to be an active PHA does is need to be at the same pH as AHAs? Or can it be at around a 5 and still be ok?
My supplier has a suggested usage rate at 1-5% but all the studies I have read are at the very least 10% gdl. Ive even seen it being used as 30% in some products on the market formulated by some reputable chemists. So I know its only the suggested usage rate being provided - but because of studies and products by reputable chemists, can I assume its safer to use over 5%.