There is electrolysis, which irrevocably destroys the hair follicle. Only expensive for a very long time and very painful. But, unlike a photo and a laser, it is suitable for both light hair and dark skin.
Try electrolysis. If you don't know how it works, google it. This method is not suitable for everyone, it is painful and expensive. But they say the result is worth everything.
Already answered in the question about hair removal:
Try a home photoepilator. I saw models from 20k to 40k. My dear. Unfortunately, I don't know how much better the more budget models are.
In any case, the cost pays off in the absence of pain.
I have never had any burns)
So the technology is there