Basic mistakes when colouring hair

Basic mistakes when colouring hair
Mistake:
The hair roots turn yellow ("burning roots").

1. The client's natural hair colour was too dark (misdiagnosis).
diagnosis)
2.The colouring time of the hair was not long enough.

Mistake:
The ends of the hair turned out too light.

1. The hair dye was applied too late on the length and ends of the hair.
2. The hair length and ends were too dry, faded, porous and the dye immediately
washed out immediately.
3. The wrong shade of dye.
4. Incorrect shade for pre-pigmentation.
As you can see, in both the first and the second case, there is a concept of TIME TO EXHAUST.
The retention time of the dye mixture on the hair is strictly regulated by the manufacturer, and it should not be violated.
Do not exceed this time. Otherwise, you may not get the result you were hoping for.
Not the colour retention time you were hoping for. The entire chemical process of dyeing hair with permanent colours can be
The chemical process of colouring hair with permanent colours can be divided into four steps, each with its own specific purpose.
1. Opening of the cuticle through an alkaline pH-shift (about the first 10 minutes).
minutes).
2. Reaction of active (atomic) oxygen release. Brightening (destruction) of the natural
pigments (approx. 10 to 20 minutes).
3. Colour synthesis from micropigments (approx. 20 to 30 minutes).
4. Crystallisation of pigments and reduction of the pH of the hair (approx. 30 to 40-
45 minutes).
As you can see, each step is very important, and this explains why dye exposure time is so long.
As you can see, each stage is important, and this explains why dye exposure time is so strictly regulated.
Toning: 20 - 25 minutes
Toning: 35-40 minutes
Graying: 45-50 minutes
Dyeing 12 side by side: 55-60 minutes

And, of course, it's important not to over-dye your hair. If you hold the dye for three to
5 hours, the hair won't fall out, but it will burn your scalp. And the consequence of that can be
cause your hair to fall out.
If you want to maintain the quality of your hair, most importantly, get beautiful and, importantly, long-lasting colour.
importantly, long-lasting colour and dyed grey hair, you need to
dye.

Ekaterina Khoroshenkova is an expert technologist at Luxor Professional.