It is very difficult to make a conditioner to Soil Association organic standards. The ingredients that are needed to give the usual silky conditioner feel that we are all used to are not permitted under Soil Association standards due to biodegradability.
Bentley Organic has made a huge step forward in having a Soil Association certified conditioner. However, you need to be prepared for a different user experience than you're used to. The texture is much lighter than a conventional conditioner and you don't get the very silky feel. It conditions well, the team here at So Organic really like the product, but if you have very dry or frizzy hair you might feel that it's not conditioning enough for you.