Food Chem. 2017 Apr 1;220:444-451. Epub 2016 Oct 4.Author information1UMR 408 SQPOV «Sécurité et Qualité des Produits d'Origine Végétale», INRA, Université d'Avignon et des Pays du Vaucluse, F-84000 Avignon, France.2UMR 408 SQPOV «Sécurité et Qualité des Produits d'Origine Végétale», INRA, Université d'Avignon et des Pays du Vaucluse, F-84000 Avignon, France. Electronic address: catherine.renard@inra.fr.AbstractThe study comprises a systematic and quantitative evaluation of potential intrinsic and extrinsic factors that impact vitamin C degradation in a real food matrix. The supernatant of centrifuged apple purée was fortified in vitamin C, and degradation was followed without stirring. Model discrimination indicated better fit for the zero order model than the first order model which was hence chosen for determination of rate constants. pH influenced strongly vitamin C degradation in citrate-phosphate buffer but not in the apple purée serum. To get an idea of the impact of the food matrix, stability in apple purée serum was compared with that in carrot purée.
(Answer: yes, namely subway delays or when Netflix won’t load, but that’s neither here nor there.) But back to the topic at hand: Whether your dark spots are from sun exposure sans adequate SPF (shame!) or lingering acne marks, there’s one ingredient that derms recommend to fade them quick: vitamin C. MORE: The Face Mask That Gives You Glowing Skin in 10 Minutes When applied topically, the vitamin C—which is often listed on product labels as L-ascorbic acid—“inhibits pigment enzymes in the skin and brightens the overall complexion,” says dermatologist Annie Chiu, who recommends it for anyone who wants glowing skin—hyperpigmentation or not. But because it’s highly unstable, it’s important that you apply it on its own or underneath a basic moisturizer to avoid it breaking down. Ahead, the 11 best vitamin C serums for glowing, bright skin. MORE: 5 Weird Things That Might Actually Be Causing Your Acne Kypris Antioxidant Dew, $67; 40 Carrots Carrot + C Vitamin Serum, $13.99;
m-61 Vitablast C Serum, $92; 100% Pure Vitamin C Serum, $38; Garnier Clearly Brighter Brightening & Smoothing Daily Moisturizer SPF 15, $11.65; Mario Badescu Vitamin C Serum, $45; Ole Henriksen Truth Serum Vitamin C Anti-Aging Collagen Booster, $48; One Love Organics Vitamin C Brightening Facial Serum, $75; Avalon Vitamin C Vitality Facial Serum, $17.99; Peter Thomas Roth Camu Camu Brightening Sleeping Masque, $62; Skinceuticals Ferulic C E, $163; Next slideshow starts in 10s How 5 STYLECASTER Editors Use Bananas in the KitchenVital GlowWild Carrot Serum Concentrate 0.17oz 5ml Specific Skin Concern: Vital Glow •Achieve ageless skin with CaR. • This rare and precious oil is the perfect balance of Vitamin A,C, E, together they work in synergy to deliver extremely effective anti-aging and anti-wrinkle benefits. • This pure and potent Wild Carrot seed oil is hand pressed in a small French village and enhanced with Vitamin E oil, creating the purest and most effective serum to smooth and firm your skin.
• Its subtle and unique scent uplifts your mood to a feeling of wonderment. Highest-grade cold-pressed certified Wild Carrot (Daucus carota) oil, Certified GMO-free Vitamin E (Tocopherols) oil. Application Uses & Tips In the palm of your hand, supercharge your daily dose of crème by mixing in 2-3 drops of CaR. Or apply alone for a more intensive treatment. In order to provide the best client experience, Paula’s Choice Skincare is no longer shipping to Singapore via our Australian site. Our valued clients will now be able to shop locally through our independent distributor in Singapore. In addition to the same beautifully crafted skincare products we have always offered, you’ll enjoy: Faster, more efficient delivery The option to shop online or in-store The ability to earn rewards for shopping or referring friendsSana Passricha We all know that there is no magical eraser when it comes to perfecting skin, but one ingredient comes pretty close: retinol.
Celebrities swear by it and experts believe it is the answer to every skin woe. Though it is most popularly known as a prescription ingredient, retinol is also cosmetically available in your creams, serums and face oils. Retinol is a more diluted form of Retinoic Acid - a Vitamin A derivative - that helps with the rejuvenation of skin. But, Retinoic Acid cannot be used without prescription, because it is so potent that it might peel or irritate the skin. If you need to use Retinoid as a solution for your skin issues, you must start with Retinol first. But, why is this product known as the Holy Grail? In the past, we have discussed about the benefits of Hyaluronic Acid and Vitamin C and now, it is time to disclose the secret behind this cult skincare ingredient. Note: Let's get into the science behind this ingredient a little bit here. Retinol is a stable form of retinoic acid. Now, retinoic acid is a hundred times more potent than retinol and is only available in prescription drugs. It is said that the acid works better because it has a stronger capability of preventing the breakdown of collagen.
But, if you are just starting with this ingredient, choose an over-the-counter retinol product to see how it works for your skin. Also, retinol is the vampire of the skincare world, so it works best at night. Where it's fromRetinol is present, naturally, in animal sources (cod liver oil, milk, eggs) and in certain fruits and vegetables like sweet potatoes, apricots and spinach as retinoic acid. It can also be manufactured synthetically. What it doesOriginally used to treat acne, retinol isn't just for breakouts, though. Dermatologists vouch for retinol for its ability to smooth wrinkles, reduce brown spots, tighten skin and cure dullness. In the past few years, scientists have also created a light and oxygen-sensitive retinol to make it more stable. How it worksTo Reduce Fine LinesRetinol prompts surface skin cells to turn over rapidly, making way for new cell growth. It thickens and deepens layers of the skin where it might start to wrinkle. In the beginning, the skin peels a bit and it causes a bit of redness, but that's a temporary reaction.
Boosts Collagen ProductionSince the ingredient is making way for new cell growth; it automatically boosts the production of collagen (protein found in abundance in your body that provides strength and elasticity to your skin). This helps in smooth and supple skin. Reduces Brown SpotsRetinol is responsible for smoothening out your complexion. It comes down hard on brown spots that cause pigmentation and sloughs them off. It also reduces the production of melanin and darker pigments. Treats AcneOnce spread on the skin, retinol unclogs pores, allowing other medicated creams work better. These also reduce acne outbreaks by preventing dead cells from clogging pores. Here are the ones we recommend. Natura Bisse Essential Shock Intense Retinol Fluid This is a cult retinol product that doesn't leave the skin dry or itchy. It boosts the power of retinol, amino acids (which redefine and firm the skin) and soy protein (which also deeply nourishes and hydrates skin). The texture of the serum is extremely light and so it can also be applied to oily and sensitive skin.