L2 colour and lighten hair key terms

Front

Adverse reaction

Back

When a client has an unfavorable reaction to a hair or skin test before a service.

Front

Allergic reaction

Back

Redness, soreness, swelling or itchiness caused by a product.

Front

Barrier cream

Back

Applied to the hairline during colour to prevent staining of the skin.

Front

Colour spectrum

Back

A range of colour that is divided into six equal portions (primary and secondary colours).

Front

Colour star/wheel

Back

A circle of colour that is divided into 6 equal portions, 3 from the primary colours and 3 from the secondary colours.

Front

Creeping oxidation

Back

When colour product is left in the hair and carries on working.

Front

Depth

Back

How light or dark the hair is ranging from 2-10 on the international colour chart.

Front

Development Strand test

Back

Check the development during the colour service.

Front

Eumelanin

Back

Natural black and brown pigments.

Front

Hydrogen peroxide

Back

Softens the cuticle and allows penetrations of the colour products.