What should I pay attention to when dyeing my hair?

1, don't wash your hair the day before dyeing.

The oil secreted by the scalp can protect the scalp well, and they can prevent harmful substances from infiltrating into the body through the scalp to some extent. Therefore, it is best not to wash your hair and use conditioner the day before dyeing, otherwise it will affect the dyeing effect. Don't bake oil a week before dyeing your hair.

2. Do a skin test before dyeing your hair

Before dyeing hair, apply the hair dye to the delicate skin behind the ear or inside the arm and observe for 2~4 days. If there are no allergic reactions such as erythema, papules and blisters, re-dye.

3. Apply some lotion around the hairline.

Before applying the hair dye, you can apply some emulsion or vaseline ointment around the hairline, which is better for cleaning to prevent it from getting contaminated with medicine. Before dyeing hair, you can also remind the barber to apply the hair dye as far as possible to the hair root 1 cm to avoid direct contact with the scalp.

Extended data:

People who should not dye their hair:

1, born with poor hair quality

People with poor hair quality, easy to split and break, such as iron deficiency, thyroid problems and endocrine disorders, are not suitable for dyeing and perm. Such people are prone to hair loss, and dyeing their hair is undoubtedly worse.

2. The scalp is broken

Include eczema, psoriasis, folliculitis and trauma. This kind of people's skin barrier is incomplete, and dyeing hair will not only aggravate the original skin problems, but also increase the absorption of harmful substances by damaged skin.

3. Children, the elderly and people with hepatic and renal insufficiency.

Children's skin is delicate, they are more likely to have allergic reactions to chemicals, and their detoxification ability is weak. The liver and kidney functions of the elderly are gradually weakened, and harmful substances may accumulate in the body, increasing health risks. People with liver and renal insufficiency have problems in detoxification ability, so it is not appropriate to increase the burden and aggravate the condition.

References:

People's Daily Online-Hair dyeing may bring four kinds of injuries. How to dye hair is less harmful to the body?