I will tell you a true story about one of my best friends (well I have 2 BFF). Jamie once dyed her hair. She didn't think that her hair will be damaged. I guess her hair is a sensitive hair (because I did dye my hair once, but it didn't affect my hair much) that's why her hair was damaged. She was desperately and asking me for help. I was confused. I didn't ask Google for help. Instead, I ran to a best and nearest hairdresser in my town and I asked her for help.


OK so let's get inside the main part.
- If you decided to dye your hair to a bright color (neon,...) you have to remove your nature dark hair color. That would be hard to dye your hair back to your nature hair color. Also, it can increased the risk of brain tumors, meningiomas,...
- And dyeing your hair could easily making your hair dry, lose the nature shine, it could make your hair breaking off.
- If you have an ombre hair and you don't take a right care to your hair, the risk of having a split hair is high.
- Of course dying your hair could make a huge effect to your head skin.
But how t avoid all of those risks. Well, the hairdresser did give me some tips and secret.
- Try dyeing your hair with good hair dye.
- If you want to change your hair colour back to nature, you have to wait at least 6 months.
- Washing your hair 2 days/time without using hot water.
- Try to steamed hair balm 2 times/week.
- Using sunscreen for hair each time you go to sunny places.
Jamie did that for months. And it did work. And, of course, I would change my hair back to normal after waiting for 6 months.
I don't know if it works out for you guys, but I guess warning you could make you draw more attention to your dyed hair.