Because it makes you light up like a Christmas tree full of glittering lights, and personally not in a good way.
This little tube of Shiseido Glow Enhancing Primer was a beautiful treat inside the recent BRBB and I was overjoyed as I am a huge fan of Shiseido products. Upon opening and squeezing a small amount out of the tube it became apparent that the liquid has a sort of sheen effect not quite glitter but a reflective quality to it. When applied to my skin it left a slight tackiness that remained even after waiting 10 minutes for it to settle which in turn caused my foundation to become streaky when applied. Also the glow effect made my skin turn brilliant white with a really high flash back of light when looking in the mirror, far too much glow for me.
I feel that on the right skin tone and type that this would be a brilliant addition to brighten and give a healthy glow, just didn't do anything to me
In terms of 'glow enhancing' this primer is underwhelming. I received this in the March BB and was very happy to see a high end deluxe sample primer - you can never have too many. However I can do without this one.
I can't fault the packaging, it's eye an catching silver squeeze tube so you're bound to get almost every inch of product. It has a semi thick consistency but I'd have to say it's thicker than other primers I've used (Benefit, Mecca Cosmetica and Becca).
When rubbing a small amount on the back of my hand I can make out some sheen. I was expecting to see some reflective fine shimmers or something to indicate how this product was going to achieve some glow but I found none.
When I apply it to my face I notice the same thing, some sheen and little else. It smells similar to sunscreen but doesn't linger long. After letting it sit for awhile it felt lightweight as if I was wearing nothing but my face also looked flat and dull - where was the glow?
If I couldn't see the glow on my bare skin there was no way I'd be able to see the glow with foundation on top! I tried this with MAC Studio Fix Plus a number of times and sure enough there was no difference.
This primer really adds nothing to my makeup routine but to avoid being wasteful I mix it with MAC Strobe cream or Becca Backlight Priming Filter.