Some people say to leave it in overnight...some say for a couple of hours. The idea is to smother the lice. Now I cant really see them surviving more than a couple hours. The oil in the mayo will help to comb out the nit(eggs). Be sure to repeat this process every 5-6 days in case you miss a couple of the eggs. Hope this helps.
You should leave olive oil in your hair for at least 1 hour but it does depend on what you are using the oil for. For example if you are using it for hair loss then you will need to leave it on for a considerably long amount of time,3 hours at the most but if it is for massaging then you should massage it in for about 15 minutes then wait 1-2 hours and then remove it. Hope this helps.
long hair
Most likely, if you used dye, it stands on the package
45-60 mins MAX
A leave in conditioner is an essential for every woman's hair, whether your hair is long, short, wavy, straight, curly or somewhere in-between. A good leave in conditioner will help to protect your hair from heat damage, wind and split ends, and it will give your hair a silky shine. When searching for the right type of leave in conditioner, remember that not everyone should use the same type of leave in conditioner. Instead, you should look for a leave in conditioner that is designed for your hair type. Many of these conditioners tell you on the bottle what type of hair they are designed for.
Redken Shades EQ should be left on the hair for 20 minutes at room temp. If heat is added, leave on hair for 15 minutes.
If it is an ordinary conditioner then you only need to leave it in for 2 minutes but if you are using a treatment or leave in conditioner you should have it in for 10-15 minutes. Don't put conditioner on the roots as this is new hair. Put it on the middle length and ends of your hair.
Read the package. Every dye is different, and it will tell you in the instructions how long to leave it on.
It depends on what kind of hair color you have, and how long you leave the hair die in. If you follow the instructions it should come out great.
A turkey sandwich with mayonnaise should be eaten within three hours if not kept cool. Mayonnaise has a tendency to spoil rather quickly at room temperature.
it says 5 mins on packet put if you really want it to work leave it in for 10-15 mins
Anyone can have long hair bit it is not ethical or becoming for professional to have long hair,leave that for WOMEN!!!! Call me old fashioned.