Review (3/5): Conditioning subtle colour. Difficult application.
Shipment speed was reasonable and the amount included is generous. (Enough for multiple applications on long hair).
However the results may depend on application which is not easy to perfect. The steps required of hearing and cooling the hair is almost impossible to do evenly on long hair. Seems hair salon equipment is needed for perfect usage.
Personally, my result was not even.
If the goal is to slightly darken damaged or bleached light hair or add like slight tinges of colour without any damage, this may work for you.