Here are some tips, hope it will be helpful for you.
1. Brush and Styling Tips
When caring for hair extensions, brushing or styling the extensions gently can prevent the hair from falling out. Use a soft-bristled brush, start at the bottom and slowly work your way up.
2. Wash Tips
Wash your extension at most twice a week with hair moisture products. Because your extensions can’t have natural nutrition to keep your hair health. So this will keep the moisture in from shampooing. But please don’t drying them out from over-shampooing .
3. Deep Conditioning
Once a week, carefully put your extensions in lukewarm water and apply a bit of conditioner all over. Leave for around 20 mins then rinse it and let it dry naturally - often using a blow dryer will damage them. If have to, please put the dryer in a cool setting (almost as if it was wind).
4. Use a Heat Protection
Use a heat Protection on hair extensions to reduce the risk of heat damage whenever you use heat on your hair
5. Keep Ends Trimmed
As careful as you are, your human-hair extensions will most likely get split ends. To avoid letting the damage move up the hair shaft, trim the ends every 6-10 weeks. You can do it yourself by using salon scissors, or go to a hairstylist.
6. Detangle Tips
Comb your hair to detangle. While you combing it, Please divided the hair into 3 parts , comb it from your way up on to the top.
After you detangle the hair by combing it, please gently wash & condition it, please don’t rub or twist hair to dry.