Now is a society that pursues fashion, not only women pay a lot of attention to hair, men are also starting to focus on hair trends.

In addition to trying all kinds of hairstyles, they have also started to dye their hair.

However, some people think that hair coloring is a very harmful thing to hair and it can lead to baldness. So, what is the truth? This article will give you a detailed introduction.

Classification of hair dyes and the principle of action

There are many brands of hair dyes on the market, and in terms of maintenance effect, hair dyes are generally classified into three categories:

1. temporary

Temporary hair color comes in various forms, including rinses, shampoos, gels, sprays and foams.

Its color is usually brighter and more vibrant than that of semi-permanent and permanent hair dyes.

It is generally used for special occasions, such as masquerade parties and Halloween.

Temporary hair dyes have large pigment molecules that do not penetrate the cuticle.

The colored particles adsorb (adhere tightly) to the hair shaft and the color is easily removed by washing the hair.

2. semi-permanent

Semi-permanent hair dyes have smaller molecules than temporary dyes (aniline derivatives, nitramine based dyes or basic dyes).

These dyes partially penetrate the hair shaft and generally last for about a month.

Semi-permanent hair dyes do not contain or contain small amounts of hydrogen peroxide, ammonia, and are therefore less likely to damage the hair.

However, it may still contain the potentially carcinogenic compound p-phenylenediamine (PPD) or other ingredients similar to this.

3. Permanent

There are three types of permanent hair dyes: vegetable permanent, metal permanent, and oxidative permanent.

Oxidative ones are the mainstay. The main principle of action is that Armonia is used to open the epidermal stratum corneum, allowing the dye intermediate, color developer and artificial pigment to penetrate into the cortical layer together.

Relations between hair dyes and hair shedding

Hair dyes contain a lot of fragrances and preservatives, and these ingredients are the reason for some people's allergies.

The nitrobenzene and aniline contained in hair dye want are highly toxic substances that are easy to accumulate and have a high risk of causing cancer; and it is difficult to discharge these substances as long as 1% of them enter the body.

From the point of view of hair follicles, perm hair dye is generally the alkaline ingredients in the hair dye to open the scalp surface of the hair scales, artificial pigment into the hair cortex layer, combined with a part of the natural pigment to achieve the purpose of hair dye.

The scalp suitable for the growth of hair follicles is weakly acidic, while the alkaline ingredients in the hair dye will change the scalp environment, so that the scalp PH environment value from weak acid to weak alkali, resulting in hair loss and shrinkage of hair follicles.

From a hair collar piece perspective, I'm sure you know why hair dye can cause hair loss to some extent. The principle of coloring is to use the opening of the hair scales to allow artificial pigments to enter the hair.

If you do not use some hair care products in time after using hair dyes, or if you dye your hair frequently, then your damaged scales will not be able to recover and will only become more and more frizzy and fall out more easily.

Can I try hair tint?

As long as it's a hair dye, it's bound to have some negative impact on your hair. Our advice is that if you can avoid such things, you should do so. However, in such a trendy era, most people should be 'grooming' their hair. If you are one of these people, please take note of the following tips.

If you have fragile hair and a sensitive scalp, then you are not a good candidate for colouring your hair, or try to reduce the damage to your hair by choosing a pick and colour, for example.

In addition, you need to take good care of your hair before and after colouring.

And, please pay extra attention to the frequency. Even if you get tired of the colour you dyed a month ago, you'll have to wait at least another four or five months before you can change to another colour. So, please do your best to research in detail before colouring your hair to avoid you not liking it later.

If you don't want to harm your hair, why not try a hair system? It might have great effect on you.