The professional range is ideal for salons and colourists, with a gel base that allows for highly accurate colour placement. It can also last up to 40 washes when cared for, fading true to tone, making it one of the longest lasting semi permanent bright hair dyes on our list. 4. Crazy Color Semi Permanent

Brite Organix also has a great offering of semi-permanent hair colours ranging in colours from bright neons to soft pastels. So, while we still have those clients who return every six weeks to maintain their signature highlights, others like to keep us on our toes, asking for new shades and techniques that evolve every visit.To complete a strand test, cut a piece of hair and coat with the dye then wrap in cling wrap and leave for 8 hours. For an allergy test, apply a small amount of product behind your ear and leave for 24 hours. Remove immediately if any irritation occurs and do not use the product.

Next up, which tone should you go for? Well, obviously, you being the decision maker here, you can choose whatever colour you so desire. That being said, here's our advice: Arctic Fox is probably one of the best-known vegan hair dyes in the US. The brand was founded by cruelty-free vlogger and passionate animal lover, Kristen Leanne.

Benefits of vegan hair dye

Whether you're looking for a bright red hair dye or a dark red hair dye, worry not because there will be an option for you. But you should also look out for which dyes are best for your hair long term. Is red hair dye damaging? When it comes to using a red dye, if you're a natural platinum blonde, you probably won't need to lighten your hair before you start. So, in this instance, it's likely that the darker red dye won't significantly harm your hair.