I began using this only recently, having been a fan of the Fructis Triple Nutrition Conditioner and desiring to switch to something silicone and paraben-free. I've deducted a lippie because unfortunately, this mostly-natural/biodegradable product contains sulfates so it's not ideal for sensitive skins or allergy sufferers.
I have long, thick curly hair that is color-treated and requires lots of moisture. I've been co-pooing for a few years now (conditioner only) since "squeaky clean" shampooed hair is too dry for me. This conditioner is lighter and thinner than others I've used and gets absorbed into the hair, so I did have to use a bit more than usual and it took more effort to detangle for the first few uses. After several uses, however, my hair detangles effortlessly and I can go 3-4 days between washes.
The "layer" that others describe is from emollient oils, as this conditioner contains apricot seed and camellia oils which tend to coat the hair. Because I need intense moisture, I actually add more conditioner as a leave-in after rinsing, and I apply extra virgin coconut oil before combing my hair out. After several weeks' use, my natural curl has actually loosened a bit, particularly at the crown, and my hair is very manageable, super shiny with fewer fly-aways.
This product has a sweet "shower fresh" scent that can be cloying unless you like scents of this sort. Think plum/plumeria/cotton blossom, along the lines of Agree or Finesse in the 80s (if you're old enough to remember these!). Moderately priced at $3.39 for 12 oz. I wish I could find larger bottles of it.
Works great for thick, curly, dry and/or color-treated hair. Seems from the other reviews that if your hair is stick straight, fine, limp or oily, you should skip it.
If you have dry hair and/or fine hair and the Garnier doesn't detangle it well and/or weighs it down, I instead recommend Nature's Gate Organics Chamomile and Lemon Verbena Conditioner. It's free of parabens, sulfates and synthetics, and has a natural, soft scent.