What types of vitamin C does the C5 Super Boost Eye Cream contain? 
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The C5 Super Boost Eye Cream contains 3 forms of vitamin C at different concentrations: ascorbyl glucoside at 2%, 3-O ethyl ascorbic acid at 2%, and ascorbyl palmitate at 1%. The 3-O form of vitamin C is both water- and oil-soluble, while ascorbyl glucoside and ascorbyl palmitate are water-soluble, so you get a multi-level vitamin C deposit within the skin to brighten dullness, visibly firm and help fend off aging free-radical damage.  
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What’s the difference between the C5 Super Boost Eye Cream and other Paula’s Choice eye creams? 
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The C5 Super Boost Eye Cream is our only eye-area formula with a blend of firming vitamin C, bio-active peptides and plant-derived ingredients to immediately improve dark circles, puffiness and dullness and also target the underlying factors that lead to them. Texture-wise, C5 is a lightweight cream that isn’t as thick as our RESIST or Omega+ eye creams, but is more emollient than our CLINICAL eye cream, whose blend of vitamin C, retinol and ceramides is best for deep wrinkles and more advanced loss of firmness. Note: It's perfectly fine to mix and match Paula's Choice eye creams. You can use one eye cream in the morning and another in the evening to meet your specific needs. We suggest experimenting to see which product or combination works best. 
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Is it OK to apply the C5 Super Boost Eye Cream during the day?
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Yes, you can apply C5 Super Boost Eye Cream during the day. In fact, the vitamin C in this product will help to further protect your skin from daily environmental stressors and free radicals. Just remember to follow with a sunscreen rated SPF 30 or greater. Mineral sunscreens such as our DEFENSE Essential Glow Moisturizer SPF 30 are a great option. 
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What's the difference between the C5 Super Boost Moisturizer and the C5 Super Boost Eye Cream?
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While both the C5 Super Boost Moisturizer and the C5 Super Boost Eye Cream offer a robust yet gentle mix of water- and oil-soluble forms of vitamin C plus bio-active ingredients that brighten, improve uneven skin tone and fortify skin’s barrier, the eye cream is a specialized treatment that targets multiple types of undereye darkness as well as wrinkles. The ginger-derived zerumbone helps to minimize multiple forms of discolorations, while the targeted peptide blend including sh-polypeptide-121 and acetyl hexapeptide-8 join forces with vitamin C to support substances in skin that help keep the eye area smoother and plumper.
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Can I layer the C5 Super Boost Eye Cream with the C5 Super Boost  Moisturizer? 
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Yes, you can layer both C5 Super Boost products. In fact, you will see enhanced results without irritation since the forms of vitamin C in the C5 Super Boost Moisturizer and Eye Cream don’t have the same low pH requirements as pure ascorbic acid. You’ll also get better free-radical protection and environmental defense, plus improvements in discolorations, wrinkles and loss of firmness. 
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Can I use C5 Super Boost Eye Cream with other vitamin C serums, boosters and products? 
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Yes, you can use the C5 Super Eye Cream with other vitamin C skin care products. Layer boosters, serums and treatments in order from thinnest to thickest texture first, then apply the C5 Super Boost Eye Cream. You can also cocktail the products together by mixing the right amount of each in your hand, combining them and applying in one step. As with all skin care, there's no one-size-fits-all approach, so we encourage experimenting to find what works best for you. By combining vitamin C products, you get better free-radical protection and environmental defense, plus improvements in the look of discolorations, wrinkles and loss of firmness. Try using them in the morning, always following with SPF. 
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Does this work well under makeup?
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Yes, C5 Super Boost Eye Cream works well under makeup. This formula is hydrating enough to combat under-eye dryness, so makeup applies smoothly, but lightweight enough that makeup stays put instead of slipping around.
Is this okay for sensitive skin?
Yes, C5 Super Boost Eye Cream is okay for sensitive skin. It contains no fragrance, essential oils nor other ingredients that can irritate sensitive skin. Plus, the forms of vitamin C it contains are highly stable and well-tolerated by all skin types.
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Does this have a noticeable scent?
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C5 Super Boost Eye Cream is 100% fragrance free and has no noticeable scent.
Can vitamin C be applied under eyes?
Yes, vitamin C can (and should) be applied under eyes. This powerful antioxidant helps several common under-eye concerns, including brightening dullness, hydrating and visibly softening fine lines and wrinkles.