Question: How do I know if my vitamin C serum has gone bad? The best way to tell if your vitamin C treatment has gone bad is to smell the product and check out its color. If the serum is completely yellow, brown, orange, or any color other than its normal color, it has probably gone bad. Sometimes the product at the tip can be oxidized (or darker) and you can wipe that part away and continue to use the rest of the C serum, but if the entire product has changed colors, it's time to throw it away. How the vitamin C product smells is also an indication of its freshness. If it smells weird, funky, sour, or rancid, the C treatment is no longer good and should not be used. Be sure to check the expiration date of the product as well. To prevent vitamin C products from going bad, it's best to store C serums in dark glass bottles or metal tubes, away from sunlight and heat. They must also be tightly sealed after each application to prevent oxidation. To tell if your vitamin C serum is still safe to use on your skin, make sure it smells fresh, has not changed in color, and has not expired.
Last updated: September 27, 2012 FAQ: Am I too young to start using retinoids? Back « Skin FAQ 1ADVANCED DERMATOLOGY2ARROSA COSMETICS3LA PRAIRIE- Obagi is a clinical skin care line founded in 1988. Obagi products are used by skin care professionals to treat a variety of skin problems. The Nu Derm system was their first product on the market and it claims to transform cellular functions in all layers of skin. The product seems to combat all signs of aging, such as wrinkles, hyperpigmentation and scarring. There products are not available at department stores and any retailer selling online should check if it is for a genuine authorised source. They do have a list of unathorized retailers on their website so its worthwhile consulting with this if you plan and making a purchase online, The other products in the range are Blue Peel, ELASTIderm, CLENZIderm and Rosaclearm.And our #1 recommendation in 2016 is Advanced Dermatology. Our favourite products is the Obagi Professional-C Serum and it is by far the best antioxidant we have tested so far.
We are also particularly interested in the Blue Peel, but recommend this be performed by a trusted physician as it is very potent. Obagi has some interesting product videos, testimonials and a blog with some interesting articles. We recommend Obagi products to patients who have enough damage to warrant a more serious type of skin care. If you have a lot of sun damage, then we recommend Obagi. If you purely dry skin then we recommend another range. TOPBRANDTOP 31ADVANCED DERMATOLOGY2ARROSA COSMETICS3LA PRAIRIE-Obagi / Vitamin C Serum Special Free Gift with Purchase! Click for Offer Details FREE deluxe sample Hand Cream with any Mario Badescu purchase (offer valid 3/12/17-3/18/17 or while supplies last) Shipping & Coupon Restrictions+Next »(0 of 1 customers found this review helpful)It works ProsLightweightSmells GreatSoftens SkinConsBest UsesUneven Skin ToneSkin Type:DryAge:45-59Definitely a must for me ProsBrightens skinLightweightMoisturizesNon-GreasySmells GreatSoftens SkinConsBest UsesDaily UseFine Lines/WrinklesUneven Skin ToneSkin Type:CombinationAge:45-59(2 of 2 customers found this review helpful)I loved it, I bought the full size!
ProsBrightensEvens skin toneGives skin a radiant lookLightweightConsBest UsesDiscolorationEnlarged PoresFine Lines/WrinklesPost Acne MarksRedness/ BlotchinessUneven Skin ToneSkin Type:OilyAge:18-29(1 of 1 customers found this review helpful)WOW ProsConsBest UsesEnlarged PoresFine Lines/WrinklesUneven Skin ToneSkin Type:CombinationAge:30-44Love this product!! ProsMoisturizesSoftens SkinSoothes SkinConsBest UsesDaily UseSkin Type:NormalAge:60+(0 of 1 customers found this review helpful)Miracle Worker for Fine Lines and Shrinking Pores ProsLightweightNon-GreasySoftens SkinConsBest UsesEnlarged PoresFine Lines/WrinklesSkin Type:NormalAge:30-44(1 of 1 customers found this review helpful)I will never stop using this product. ProsNon-GreasySmells GreatSoftens SkinConsBest UsesUneven Skin ToneSkin Type:CombinationAge:30-44(2 of 2 customers found this review helpful)Price didn't equal results ProsMoisturizesSoothes SkinConsGreasyNot EffectiveBest UsesSkin Type:CombinationAge:18-29(1 of 1 customers found this review helpful)A Must Have Skincare Product ProsLightweightMoisturizesNon-GreasySmells GreatSoftens SkinConsBest UsesDaily UseSensitive SkinUneven Skin ToneSkin Type:OilyAge:18-29(1 of 3 customers found this review helpful)Sent it back!
ProsConsGreasyIrritates SkinBest UsesSkin Type:CombinationAge:18-29Displaying reviews 1-10Back to topPrevious | Do you have questions about this product?Get answers from in-house experts.1-10Previous | Next »Q: Would this product help my daughter who is fourteen clear up her acne scars?2/5/2017Hannah1 answer A: I think this may not be the best product for her age. Rather, I would suggest using our Glycolic Foaming Cleanser 1-3 times a week for a gentle exfoliation that will address both the acne prone skin and the old acne scars. //whitening-mask?productId=xlsImpprod6200747 2/9/2017 Brand ExpertMario BadescuQ: Is this product oil free?2/2/2017DG Washington1 answer A: Yes, Vitamin C Serum is oil free. 2/8/2017 Brand ExpertMario BadescuQ: Will this help lighten skin discolouration around my mouth (slightly darker than the rest of my face.)1/31/2017Cece Sacramento, CA1 answer A: Our Vitamin C Serum brightens uneven skin tone while diminishing the look of fine lines and discoloration.
It is not a skin lightener, but rather a gradual way to achieve a more uniform complexion. For maximum results, you can try our Brightening Kit - a collection of products that you can add into your skin care regimen to help reduce hyper pigmentation. /brightening-kit?productId=xlsImpprod11351443 2/1/2017 Brand ExpertMario BadescuQ: I cleansed with the glycolic foaming cleanser, toned with the aloe Vera toner and then applied the vitamin c serum (nothing on top of the serum? ... then my face then tingled a bit... is that normal? Will that feeling go away after continued use?1/21/2017M. P Virginia1 answer A: It sounds like the combination of the glycolic acid and the ascorbic acid may be too much for your skin. I would recommend alternating usage between the two products instead of using both on the same day. Also, you can layer your night cream or moisturizer over the Vitamin C Serum. Hydro Moisturizer with Vitamin C is a great moisturizer to help improve the radiance of your skin and is recommended for combination/sensitive skin.
/hydro-moisturizer-with-vitamin-c?productId=xlsImpprod6200715 1/26/2017 Brand ExpertMario BadescuQ: I have combination/oily skin. I saw it was stated not to use during a breakout. I get closed comedones on my forehead and chin. Should I avoid this product as well?1/18/2017Damsel Biloxi, MS1 answer A: Vitamin C Serum can aggravate open active acne and make it worse, but a few closed bumps is fine. To help reduce the amount of closed comedones, we recommend incorporating our Glycolic Foaming Cleanser and Flower and Tonic Mask into your skin care routine 2-3 times a week. ///drying-cream?productId=xlsImpprod6200679 1/20/2017 Brand ExpertMario BadescuQ: How long does the product typically last?1/10/2017Myia1 answer A: Hello and thank you for your question. The recommended usage varies from every other evening to twice daily, depending on your skin type. You have a minimum of 30 days supply - even if you use it twice daily. 1/11/2017 Brand ExpertMario BadescuQ: I am allergic to all types of nuts and nut oils.
Are there any nuts in the ingredients?1/10/2017Blushingbabydoll CT1 answer A: Although the Vitamin C Serum would be considered nut free, please keep in mind that we are not a nut free facility and that our products are manufactured on shared equipment.Propylene Glycol, Aqua (Water, Eau), Ascorbic Acid, Cucumis Sativus (Cucumber) Fruit Extract, Panax Ginseng Root Extract, Sodium Hyaluronate, Collagen, Aloe Barbadensis Leaf Juice, Lavandula Angustifolia (Lavender) Oil, Caprylyl Glycol, Phenoxyethanol, Hexylene Glycol 1/10/2017 Brand ExpertMario BadescuQ: Does this product help with rosacea?1/7/2017Jenny NY1 answer A: This will not help with rosacea and depending on your skin, we would not generally recommend this product be used with rosacea. 1/10/2017 Brand ExpertMario BadescuQ: After I apply this serum can I still use the seaweed night cream And how many times a week can I use the serum.1/6/2017Liz Burbank1 answer A: You can layer the Seaweed Night Cream over the Vitamin C Serum for enhanced results.