1. Is it true that potato skins are dyed with water?
Potato skin water can only change hair color, but it can't achieve hair dyeing effect for a long time.
Many people will say that the juice of potato skin will turn black when you get it on your hands, and it will not wash off for a long time, which shows that water has the function of coloring. Hair dyed with this water also has the effect of dyeing hair. In fact, potato skin water can only change the color of hair in a short time, and it has not achieved the effect of dyeing hair.
2. Water coloring principle of potato skin.
Potatoes contain tyrosine and tyrosinase. When tyrosine meets oxygen under the catalysis of enzyme, it will produce browning reaction, and tyrosine will gradually become another substance. Finally, these substances converge to synthesize melanin, which is the principle of potato blackening and coloring.
3. Why can't potato skin water last long?
"dyeing hair"
According to experts, although there is melanin in potato skin water, this pigment is water-soluble, it will fade after washing, and it can only change the color of hair slightly, so it can't stay on the hair for a long time. In addition, because everyone's hair quality is different, the coloring effect will be different. Some people will dye it brown, others will dye it gray.
Step 4: Skills
Although potato skin water can't dye your hair for a long time, you can sometimes cover your white hair with it when you are in a hurry. It is recommended to brush your hair with potato skin water when wet, so that the color can be fixed for a long time.
Because when the hair is wet, the hair scales are also open, which makes it easier to color. After using products such as conditioner, the hair scales will be smoothed and the gaps will be filled with silicone oil, which is not easy to color.
5, should pay attention to the principle of hair dyeing.
1 and don't dye your hair repeatedly within 3 months.
People who have dyed their hair within 3 months had better not dye it again. Because the hair dye contains a decoloring agent, this ingredient is harmful to the hair scales, and the damaged hair scales will become fragile and easily broken. If you dye your hair repeatedly within 3 months, the damaged hair scales will be damaged again and cannot be recovered. As time goes on, the health of hair is worrying.
2. Be sure to have a skin test before dyeing your hair.
Whether you are self-help dyeing your hair or going to a hairdressing salon to ask someone to dye your hair, you must have a skin test 3 hours before dyeing your hair. The method is to drop two dyes, A and B, on the same point on the inside of the wrist and wait for natural drying. If redness, itching, etc. occur during this process, the product can no longer be used.
Don't dye your hair if your skin is scratched.
Remember not to wash your hair before dyeing it. First, the oil secreted by the scalp has a protective effect on the scalp. Second, you can avoid accidental scratches when washing your hair. If there is a wound on the scalp and then comes into contact with hair dye, it is easy to cause inflammation.
4. Apply lotion before dyeing your hair
Before dyeing your hair, you should apply lotion on the hairline and behind your ears to prevent the hair dye from polluting and damaging your skin.
5. Don't dye your hair during pregnancy and menstrual period.
Pregnant women are not suitable for contact with products with chemical dyes because it is not good for the fetus. During menstruation, women's endocrine and other aspects will change. In order to prevent problems, we should also avoid dyeing our hair.