The lightening of hair to lend it colour is a subtle process. It involves the application of bleach. Bleaching, however, isn’t a standard procedure. It varies according to hair type and tint. How long you leave the bleach on the hair is dependent upon several factors. Usually, for blond hair, it is about fifteen minutes to a third of an hour. For dark hair, it is half an hour. If you have soft and light hair, the time is ten minutes minimum and fifteen minutes at max. For those with rough hair, it is half an hour.
Two factors influence the time you leave the bleach on. They are the tint you want your hair to look like and whether your hair has been coloured beforehand. Bleach has been dubbed a pretty corrosive agent. Over time, it causes a whole lot of damage to your hair. Yet the fact of the matter is there is hardly any better substitute found in the market. Those products which declare themselves to be free of peroxide tell lies. Such is hardly the case. Remember, bleach is a necessary evil, and you should never leave it on your hair longer than half an hour.
You ought to seek the services of a professional for colouring your hair. The process may be a little expensive, but you will know that you are in good hands. If you do it yourself, be prepared for any damage the bleach may do to your hair. The professionals know their job very well and won’t let you down. That is a promise. Then there is the additional bonus of pampering your hair after the job is done. The hair dyes the hairdressers keep are of various types. Some take a couple of minutes to apply, and the processing is also not very lengthy. Others though are more potent stuff which has fixed timing.
Ultimately the only rule is that there are no rules. What the hairdresser does with your hair depends on the situation he or she finds them in at the moment. While sometimes instructions have to be followed according to the letter, at other times, a few tweaks and tricks do the job very well and you, the client, will not be any the worse for wear. Whatever the case, a quarter of an hour is the maximum you ought to spend at the hair salon. When you come to think of it, 30 minutes are for the ammonia and peroxide to penetrate the hair strands and alter your hair’s natural colour. The last 15 minutes though are for the dye to develop its tint and intersperse throughout your hair.
After half an hour, the hairdresser will rinse your hair with water. Any longer than this is asking for trouble. Your hair will run the risk of becoming damaged, dry and brittle. So, it is a fine-tuned process which takes careful timing and precision handling. Among some of the other factors that enter the equation are: your hair’s natural colour, their present tint, the number of grey hair present, the hair volume and how porous your hair happens to be in the first place.