Hi you could try that – it sounds like a lovely combination and I wouldn’t mind having a go. But I don’t think it will prolong the shelf life. What I tend to do is using 5g of the dried root with 250ml of water which gives me 2-3 hair conditionings. What ever I don’t use goes in a jar in the fridge. I then either make more straight away on the wet root and freeze the second batch, or let the root dry in a sieve to use on the next occasion.