Help? Bad reaction to hair dye!

Please stop worrying about damage to the follicles. This is really only something that happens when you have serious, very deep chemical burns to the scalp. I can tell you many here have had quite bad burns from dyes and bleach and the vast majority (if not all) still have hair in those spots.

I recently had a bad experience when someone else bleached my hair and practically scrubbed the bleach into my scalp. I had a lot of quite bad burns and a lot of very large scabs all over my scalp. I have no bald spots now.

I'm afraid, if you do have thinning spots, it's either the hair has broken off at the scalp (you'll start feeling the hairs growing back very soon), natural male pattern balding) or that you're seeing something that just isn't happening because it's something you're so worried about happening.

I would actually advise you to stay away from dying for now, but more to try and let your body deal with the red patches and the trauma of a reaction.

Thank you!!!  ;D

Firstly, your hair may look like it is thinning because of the contrast between your now pink scalp and your hair whereas before your scalp was quite light. Secondly, while it is very unlikely that you have damaged your hair follicles and yes, that is a good thing, I hope you realize that this could have gone much, much worse for you. Not to be an alarmist, but an anaphylactic reaction could leave you hospitalized or worse. That is why it is important that people do a patch test 48 hours before using that type of dye; a reaction could occur on your first, third, fifteenth or any time using the product. A reaction indicates an allergy/ sensitivity that is lifelong, so you have to be aware of this when using products with PPD or associated coal tar products and azo dyes. Be careful if you decide to use henna to only use quality products as some cheaper versions (e.g. "black henna") can contain PPD. I am glad you are okay and wish you the best of luck.

Thank you everyone for your responses.
How long should I wait before I get my hair died with Henna?
Where should I go to get a Henna dye safely done? Is it something I can do at home?

You can dye your hair with henna at home. I've only used henna from Lush so I'm not an expert but I'd advise waiting until your skin/scalp is fully healed. I also recommend obtaining a sample of henna for skin patch and strand tests. Lush will give you samples if you ask. See my earlier post on this.