I'm sorry to say that there is no way to repair ends that have already split. While other methods exist, a haircut is the only universally accepted cure for split ends. The Brazilian hair treatment velaterapia, commonly known as candle-cutting, is one variation that involves burning the split ends off with a lit candle.
However, there are ways to prevent split ends from happening in the first place. Here are some tips:
1. Avoid using heat styling tools like straighteners and curling irons.
2. Use a wide-tooth comb instead of a brush when your hair is wet.
3. Use a hair mask once a week to keep your hair moisturized.
4. Get regular trims every 6-8 weeks to keep your hair healthy and prevent split ends from forming.
I hope this helps!