[leftone]

Thank you guys for your answers. @chemicalmatt I guess you might be right - the sediment may consist of preservatives in their acid forms. When I add isopropanol sediment dissolves. Can you explain why cocoamphoacetate impacts significantly preservatives solubility and CAPB (or coco glucoside) doesn’t?

Important thing about this formula is to be scentless so using alcohols or glycols is rather problematic…