I have to admit, I’ve had trouble distinguish these two Korean vitamin C serums from each other in the past. They look almost the same. Well, here’s the difference!
Last week, I shared some incredible before and after photos of my sister’s skin. She cleared out her acne and pimples thanks to Korean skin care. Vitamin C serums has been crucial in her transformation, and definitely her holy grail “must have” product. Let’s take a closer look at the two most popular vitamin C serums from Korea.
If you google “Korean vitamin C serum” these 2 red bottles are about the first to show up. I’m talking about OST Vitamin C20 Serum and Pure Vitamin C21.5 Advanced Serum by Wishtrend. These 2 bottles are very similar and look almost identical, but they are indeed 2 different products from different brands. Let’s investigate further.
OST Vitamin C20 Serum VS Pure Vitamin C21.5 Advanced Serum by Wishtrend
About these Korean vitamin C serums
OST Vitamin C20 Serum is the original vitamin C serum. The Pure Vitamin C21.5 Advanced Serum by Wishtrend is an upgraded formula, said to be less sticky and even more efficient and effective. Pure Vitamin C21.5 Advanced Serum is an award-winning vitamin C serum free from parabens, artificial ingredients and alcohol. OST Vitamin C20 Serum is very concentrated yet one of the most affordable and cheap vitamin C serums from Korea. Both serums have a high content of vitamin C. Both are very effective. Vitamin C serums have an exfoliating effect and therefore helps skin renewal to create a fresh healthy glow. Vitamin C serums are used to heal acne scars, treat acne, hyperpigmentation,Β age spots, wrinkles and lines. The product is anti-aging and boosts the collagen production in the skin. Also used to clear out blackheads. Store cold and dark in the refrigerator since this is a fresh product which should be used within 6 months. After that the serum oxidizes and becomes useless.
Feeling on the skin
My sister has tried both of these korean vitamin C serums for a longer period of time, I have tried theΒ OST Vitamin C20 Serum for a month. These are our collected thoughts. The OST Vitamin C20 Serum is thin in texture, yet somewhat thicker than Pure Vitamin C21.5 Advanced Serum which is more liquid. Much like water. OST Vitamin C20 Serum is a tiny bit more yellowish / darker in color with a scent of citrus. My sister also picks up a metal type scent? OST Vitamin C20 Serum absorbs slightly slower and gives a more sticky feel to the skin than the Pure Vitamin C21.5 one. Pure Vitamin C21.5 Advanced Serum is lighter with a watery texture and has no noticeable scent. Pure Vitamin C21.5 Advanced Serum is absorbed quickly by the skin and no sticky feel at all. Both products have had about the same effect on my sister’s skin. She got rid of all of her pimples, acne and acne scars. Vitamin C serums are also used for treating wrinkles and lines which I tried myself. The OST Vitamin C20 Serum was however, too exfoliating for my dry skin.
OST Vitamin C20 Serum contains alcohol, while Pure Vitamin C21.5 Advanced Serum doesn’t. OST Vitamin C20 Serum contains 20% vitamin C from derivatives. Pure Vitamin C21.5 Advanced Serum contains 21.5% Vitamin C and is free from alcohol, parabens and artificial ingredients.
OST Vitamin C20 Serum Ingredients: Water, Ascorbic Acid, Ethanol, Sodium Lactate, Butylene Glycol, Glucose, Camellia Sinensis Leaf Extract, Rosa Davurica Bud Extract, Carthamus Tinctorius (Safflower) Flower Extract, PEG-60 Hydrogenated Castor Oil Sodium Hyaluronate, Bis-PEG-18 Methyl Ether Dimethyl Silane, Diethoxyethyl Succinate, Ammonium Acryloyldimethyltaurate/VP Copolymer, Xanthan, PEG-180, Gluconolactone, Beta-Glucan, Citrus Aurantium Dulcis (Orange) Oil,Zinc PCA, Panthenol, Niacinamide, Glycerin, Tocopheryl Acetate, Lecithin, Caprylic/Capric Triglyceride, Ubiquinone, Diisopropyl Adipate, Phenoxyethanol, Methylparaben.
Pure Vitamin C21.5 Advanced Serum Ingredients: Hippophae Rhamnoides Water (70%), Ascorbic Acid (21.5%), Sodium Lactate, 1,2-Hexanediol, SodiumΒ Hyaluronate, Panthenol, Cassia Obtusifolia Seed Extract, Allantoin, Xanthan Gum, Ethyl Hexanediol.
Any difference in price? Yes absolutely. Pure Vitamin C21.5 Advanced Serum costs around 27 euros while OST Vitamin C20 Serum only cost around 15 euros with free shipping from Korea. There is a significant difference in price. Both bottles are 30ml.
OST Vitamin C20 Serum has a sticky feel to the skin while Pure Vitamin C21.5 Advanced Serum is significantly more expensive. Pure Vitamin C21.5 Advanced Serum have a more pure formula without parabens, artificial ingredients or alcohol. If you have a slightly more sensitive skin, choose Pure Vitamin C21.5 Advanced Serum, or KLAIRS Freshly Juiced Vitamin C Serum which is even more gentle. If you have normal, combination or oily skin, or just want to try an affordable vitamin C serum for the first time, then choose OST Vitamin C20 Serum. Basically, these two vitamin C serum are quite similar and have about the same effect on the skin.
OST Vitamin C20 Serum recently changed the packaging, see the image above. The product is now called My Signature C Source. The content is the same, the O.S.T brand has changed its name to TIA’M. To the right Pure Vitamin C21.5 Advanced Serum by Wishtrend.
Vitamin C has a strong effect on the skin. Avoid sunbathing and use sunscreen when using vitamin C serums. Also avoid products with high levels of retinol, AHA or BHA.
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If you want to save money then choose OST Vitamin C20 Serum. If you want a more high quality product then choose Pure Vitamin C21.5 Advanced Serum by Whishtrend.