Some probably do, depends on brand, look at the list on the bottle.
is henna the only hair color that does not contain ammonia or peroxide
it depends on wats in them. if they contain alcohol then yes they r bad for ur hair. not all hair products have alcohol tho. some are actually good for your hair.
Alcohol
Great opportunity to answer this question! I think there are a lot of options to go in getting hair color. by the way, are you allergic to alcohol? Generally, hair color and dye products are relatively safer nowadays, they pass through stringent government regulations. I'd advise you take some time to read discussions on hair color.
Henna
All hair color contain the same basic ingredients. They have a color mixture that possesses dye precursors and an activator, which causes the hairs cuticle to swell so the dye can penetrate the hair.
Rubbing alcohol will do nothing to change the color of your hair.In extreme cases, this can leave hair so brittle that it may crack and break
No it does not contain alcohol
If the hair spray has a high alcohol content, it can dry out the hair if used excessively and may fade hair color. Try using a professional brand if you experience this.
Lollipops do not contain alcohol.
because there are pigments in your hair that contain melanin, which gives your hair its color. Overtime, these pigments die off, and there are only few pigments to make melanin. When your hair runs out melanin is doesn't make any color. Therefore, itstead of a color, your hair becomes a transparent color such has gray, silver, or white.
Yes it should. A Demi permanent hair color contain little ammonia and are made to only deposit color or add tone to the hair. It last for about 4 to 6 weeks.