Warning: this redness-reducing primer goes on very green — like, Wicked Witch of the West green. This is not a primer you can wear on its own, but once applied, our road tester said the green tint "completely vanished under my foundation, along with some of the redness in my skin." That's the good news.

The bad? So. Much. Sparkle. If you believe (as our testers do) that the best primers are the ones you don't see, this shimmery formula is not for you. But if you want a luminous shimmer underneath your foundation, knock yourself out — you'll love this primer.

We also found the pump on this face primer to be a bit too generous. A little product goes a long way, but one tap and a full stream of product shoots out, which makes for a messy container and too much wasted product.

In a word: love. These are the primers we'll reach for after this road test. A pea-size dab covers your entire face, and they feel rich and silky. All of the testers noted the unusual way these primers "dry" to a powdery finish (one tester remarked that this feature "seemed to suck up the oil on my face throughout the day").

One tester said that both the peach and lavender primers brightened and evened out her skin tone and kept her foundation in place all day. She also noted that these primers have a blurring effect: "It was like seeing my skin through a soft-focus lens," she said.

For our redness-prone tester, the yellow primer did a great job muting the irritated red patches around her nose and cheeks, and she also found that it lightened the dark circles under her eyes. This was her top pick because "it didn't sink into my skin the way some primers do — it created a smooth barrier between my skin and foundation, so the coverage was as close to flawless as it gets without professional help or Photoshop."

If this primer was a drugstore buy in the range of $15-$20, we'd give it our blessing. The light green tint offers some color-correcting coverage of red patches, it created a great surface for the different foundations we paired it with, and one tester with sensitive skin remarked that she loved the "light, lotion-like consistency."

But for the price, this little tube needs to wow us more than a great drugstore primer (like L'Oreal Revitalift Miracle Blur, $19). DermaBlend's SkinPerfector didn't completely deliver on its promise of "full coverage" of irritated, red skin or rosacea. This color-correcting primer also loses a few points for poorly designed packaging. Too much primer pours out when you squeeze the coated aluminum tube, and you can't easily stop the flow.

And despite billing itself as a color-correcting primer, if you read the fine print on the back, it lists "sunscreen" as its purpose and in the directions for use. Sneaky? Yes. But on the bright side, it's a color-correcting primer with SPF 15.

Physician's Formula's was a trailblazer in formulating color-correcting products for sensitive skin, but our testers were not crazy about this trio of primers. Problem #1. The packaging and application. Twist the pen, and product oozes into the rainbow-colored brush. Simple enough, right? It takes a few twists initially to get any product to come out (the directions recommend 10-15 turns), but then, lookout ... ooze city. Every time we used the primer, after one or two twists (as directed) one of two things happened: 1) nothing or 2) too much product gushed out... and continued gushing. A lot of waste, a lot of mess and the brush doesn't "sweep" across your skin because the primer is very thick and sticky (think: runny toothpaste).

The upside? Although these primers appear chalky on bare skin, they do offer color-correcting benefits. The green formula masked redness and created a smooth surface for foundation, but after wearing it several days in a row with different foundations (YSL Touche Eclat Illuminating Foundation, Laura Mercier Tinted Moisturizer, Dolce & Gabbana Perfect Matte Liquid Foundation), one tester said her makeup felt heavy and oily by mid-day.

The peach primer did a noteworthy job brightening another tester's skin. She also noted that the paraben-free, non-comedogenic, and oil free formula didn't make her break out (bonus!), but overall gave it a thumbs-down because "it felt sticky and turned my face into an oil slick."