Now that I finally know what I'm doing to care for my wigs (this is all new to me!) I've found how essential a product like this is. I don't really need the Thermal part; none of my wigs are able to take any heat...but it still works. I've ordered the regular Leave In conditioner and detangler to use when this one is empty. Smells nice, and does not seem to leave an icky buildup like I feared it might. And I soak it pretty good (wig is long and gets really tangled!) I would purchase again.
Nice smell, no build up. Works quite well.
None that I can think of.