This adds a completely different edge to your facial. I highly recommend using this and filling in the consultation card. This helps you, as the therapist, identify oily areas, dry patches, dehydration, pigmentation and balanced areas of the face.
This way you have a bit of a head start when you are doing your skin analysis.
This can be done before you even start as it does look under their skin, however it is really good to do after the first cleanse, but explain to the client what you are doing.