1. Apply vaseline from scalp to shoulder and neck. Professional hairdressers will apply professional isolation liquid on the scalp of guests before dyeing their hair to protect the scalp. If you dye your hair at home, you can apply a layer of vaseline to the scalp and shoulder and neck skin, which can also achieve the effect of isolation.
2. Before dyeing your hair, do an allergy test. Apply a small amount of hair dye behind the ear or inside the elbow and stick it on the breathable adhesive tape for 24-48 hours. If the skin is red and swollen during the test, you are allergic to this hair dye and should avoid using it. If there is no response, it is safe.
It is best not to wash your hair the day before dyeing your hair.
This can preserve the grease on the scalp and protect the scalp.
4. Avoid washing your hair. In the process of dyeing hair, never "wash your hair" to avoid getting a lot of hair dye on your scalp.
5. If allergic reaction occurs, seek medical attention immediately. Always pay attention to the scalp condition after dyeing your hair. If allergic reactions such as itching and swelling occur, you should seek medical attention immediately. If ignored, it is easy to cause hair follicle necrosis.
6. Dye your hair at least twice every 3 months. In order to avoid excessive stimulation and damage to scalp and hair follicles, the interval between dyeing hair should be more than 3 months. Frequent dyeing of hair is easy to damage the quality of hair, making the dyeing effect worse and worse.
7, good hair quality, long-lasting hair color. The best way to make hair color last is to avoid hair damage. For example, using hair care products, keeping the temperature of shampoo not too hot, keeping the temperature of hair dryer not too hot, or having a balanced diet and getting enough sleep from the inside out can keep hair healthy, smooth and supple, thus ensuring that the hair dye is fully retained and not easy to fade.
Problems needing attention in dyeing hair
1. Color selection and light dyeing shall not exceed 3 degrees. The principle of dyeing hair is to open the scales that protect hair, remove the original color of hair, and add the color of hair dye. Therefore, when choosing the color of hair dye, Tian Hongyu's suggestion is that the target color can only be 3 degrees lighter than its original hair color at most, otherwise it will do great harm to hair. If you want to pursue a lighter color, it is best to dye it several times, and the interval between each dyeing is more than one and a half months.
2. It's hard to stand out. For beginners, it is better to choose something that is not much different from the real color of hair for the first time.
You must wash your hair before dyeing it. Make sure the hair is clean before dyeing, and there can be no styling products such as mousse and hair gel. And the perm must be one week before dyeing. Allergic skin should be tested for allergies.
4, short hair with ears, a box of hair dye cream is enough. Shoulder-length hair, use 1, 2 boxes of hair dye cream. If you have long hair, you may need 2 or 3 boxes.