Reviewed and rejected: WEN Sweet Almond Mint Conditioner
Unfortunately, WEN Sweet Almond Mint Conditioner - which is to be used in place of shampoo - didn't really live up to expectations. It is - aside from some plant extracts - largely made up of standard conditioning ingredients (glycerin and stearamidopropyl dimethylamine), silicone and detanglers (behentrimonium methosulfate)
It has a preservative that is called methylchloroisothiazolinone. In high concentrations it can cause chemical burns and it is a skin and membrane irritant and so it was largely removed from most cosmetic products except for those with only short duration skin contact such as rinse-offs. It also has another preservative, methylisothiazolinone, that was found to be a neurotoxin in a trial on rats (however, there isn't much other data).