The short answer: time. All the heat does is speed up the lightening process, but it can cause some serious damage along the way by lifting moisture. 1 You’re at particular risk if your color isn’t appearing light enough—it’s easy for a colorist using a little heat to use too much.
Does heat dye hair faster?
Heat is generally used when the hair proves to be more resistant to color and bleaching, or to make the lightening process faster with darker hair. … An experienced hair colorist can often gauge the timing intuitively, but that is only because he or she would have performed the process many times before.
Can you put heat on bleached hair?
Avoid the Heat. If you bleach your hair, then you probably blow dry, flat iron, or curl your blonde hair each day in order to show off those beautiful, bright locks. However, using heat on top of bleaching hair on a regular basis doubles the damage.
Can I leave bleach on for an hour?
Never leave the bleach on your head for longer than 1 hour.
Is Warm weather good for hair?
The sun is working overtime beaming down on your head and dehydrating your mane. The result is drier, more brittle hair; basically leaving you with more fragile strands that can be susceptible to longer term damage. The UVA/UBA rays from the sun are harmful to our hair, and scalp!