Best products for human hair extensions?

be careful about the heat you use on them, depending on how high quality the human hair is, you can fry the ends pretty easily if heat is applied without a protection for a long time. I do my own since im a licensed cosmetologist, and i wear mine for weeks at a time. Ive found that the best time to really condition them, is when your not wearing them. I bought my hair and glue from sallys, and with my hair, if i condition them too often, they loosen up a heck of a lot faster then i would like them too. So when i condition them while they are in i only apply it to the ends. i never put it at the roots anymore unless im removing my extensions. with how soft my roots usually are, the conditioner will have them starting to soak off after a day or two worth of showering, so i can't apply it to my roots when whereing them. just use heat protectant when your styling with heat and you should be pretty good. your hair wont suffer very much damage unless you remove them incorrectly. one thing you might want to invest in is some dry shampoo, its a product that allows you to remove dirt and oil from your hair without getting it wet. If your hair is thick or rather curly and you like to straighten it, it will help alot. I had 18" extensions and my real hair was about shoulder's length which blended fine once styled, but with how thick my hair is and with its wave, it took me forever after the shower to get ready. it took a long time to blow dry(i find i prefer blow drying completely right after a shower, cuz the less they're wet, the less they'll loosen up.) and once that was done,i still had to spend a while taking it section by section to get my thick hair to straighten out and blend with my extensions. so using a dry shampoo is nice when you just don't have the time to spend over an hour getting ready. hope that helps!