HI:FI - PERMANENT HAIR COLOR (TONERS (0))

1. Mix the BES Hi-Fi toner (0S series) with low-volume OXIBES developer (usually 10 volume/3%), recommended for toning and delicate pastel shades on previously lightened hair, at a base ratio of 1:1.
2. Apply the mixture evenly to previously lightened hair, dry or damp.
3. Leave on for the recommended time while monitoring how the shade develops; this is usually shorter than for a standard hair colour since it's a toner.
4. Rinse thoroughly with lukewarm water until the water runs clear, then shampoo and apply a post-colour treatment.

This product contains ingredients that may cause skin irritation in some people; a preliminary sensitivity test must be done according to the included instructions. This product must not be used to dye eyebrows or eyelashes, as this could cause blindness.

What is a BES Hi-Fi 0S series toner used for?

0S series toners are used to tone or neutralize unwanted undertones on previously lightened hair, usually with a low-volume developer (10 volume).

Can this product be used on natural, unlightened hair?

No, 0S series toners are designed for toning previously lightened hair, according to the official Hi-Fi line technical sheet.

Should I do a sensitivity test before applying?

Yes, a skin sensitivity test is required before each application, as per the manufacturer's official warning.