Oh wow! I love these powders so much! So first off these are NOT highlighters and they are NOT Setting powders, they are Finishing Powders that you apply after you have finished your makeup. Now I will admit I do sometimes set my makeup with these if I'm in a hurry, and I have been on kicks where I will set my under eye concealer with these, but they aren't technically meant to set your makeup, and if you are oily you will still need a setting powder if you want long lasting staying power. Dryer skin types could get away with it but if your base is very tacky these could look a little patchy if not buffed/blended in well.
Ok with that out of the way, I want to say I am just completely obsessed with these powders, they are truly unique. When you apply them they do something so beautiful to the skin, it's hard to explain but they give you like an airbrushed youthful healthy look. They help soften and smooth out the look of your skin, blur pores and other imperfections, even blemishes, and cover redness, while also adding back color to your skin giving it a little more dimension.
So I have the shades Luminous light, Dim Light, and Ethereal Light, for reference I have fair-light skin. Luminous Light actually does have a slight bit of micro shimmer in it, but it is not noticed by others unless you are literally like 3 inches from them, otherwise it looks like you have smooth healthy skin. Dim light has no particles of shimmer but has a very slight pearl effect kind of like an opal in a way, but beige in color and you don't see this when you put it on the skin. On the skin it just gives you an airbrushed look, like you are hydrated and youthful.
I think that for anyone that is complexion obsessed, and pays attention to detail will really love this product. I used to freelance and every Artist I worked with used an ambient lighting powder in their kit. They just photograph so beautifully, and give brides an extra special glow. So if any of that sounds like you, I think it's worth picking one up to try.