Perm keeps lush curls for long. Its secret lies in the chemical composition, which is applied to the hair. Then the hair is treated with a special holder.
Permanent hair varies by type of chemical composition, which are processed hair. Today, almost every year there are new types of chemical drugs and hair curlers, so in the sea forms zavivok and easy to get lost. In this case, too, the old methods do not hand positions.
Still most popular and one of an acid resistant zavivok. It is able to hold the hair up to six months, but is not harmful to the hair. Therefore, this type of perm contraindicated thin and soft hair, because they will stretch at the root, and not be able to keep in shape, and the acid will make them brittle. In addition, it is not recommended to resort to acid perms women with sensitive scalp and dry brittle hair.
Type alkaline perm less resistant, lasts no more than three months. Curls are obtained elastic and look very natural. Unlike iron with an acid, are drugs penetrate each hair and reveal its outer flakes. This procedure operates on softer hair, but is not suitable for many kinds of hair. If you have straight, heavy and coarse hair, it will last only a month and a half.
Acid perm using thioglycolic acid is very unstable, lush curls lose volume already at the end of the month with a little. However, this type of hair is less dangerous since it does not cause sudden swelling during the procedure, unlike in the first types. This perm can be done on colored hair.
Neutral perm combines certain properties of the first two types. As part of preparations used for this type contains allantoin, which is known for its soothing properties. This kind of curling owner can do any type of hair. Curls are obtained elastic and strong, and she perm relatively resistant.
The composition includes amino curling proteins and amino acids, as the name implies. They heal and nourish the hair that will minimize the negative effect of the use of chemicals. Curls are obtained gentle, soft and natural. However, this perming ephemeral and consequently unsuitable for heavy, rigid and long hair as curls develop more rapidly straightened under the weight of their body weight.