{"product_id":"cosrx-refresh-aha-bha-vitamin-c-booster-serum-30ml","title":"COSRX Refresh AHA BHA Vitamin C Booster Serum 30ml","description":"\u003ch2\u003eWhat is COSRX Refresh AHA BHA Vitamin C Booster Serum?\u003c\/h2\u003e\n\u003cp\u003eThis COSRX serum is a three-in-one \"glow\" step. Glycolic acid (an AHA) smooths the surface, betaine salicylate (a gentle BHA) helps keep pores clear, and vitamin C supports a brighter, more even-looking tone. It is light and quick to absorb, and it comes in a 30ml dropper bottle.\u003c\/p\u003e\n\u003cp\u003eThe base is unusual: instead of starting with water, the formula leads with kiwi fruit extract, dragon fruit extract and sea buckthorn water, all naturally rich in vitamins. Niacinamide, panthenol and allantoin round it out, adding balance and comfort so the acids feel gentler.\u003c\/p\u003e\n\u003ch3\u003eIs COSRX a Korean brand?\u003c\/h3\u003e\n\u003cp\u003eYes. COSRX is a Korean skincare brand known for simple, effective formulas such as the Advanced Snail 96 Mucin Power Essence and its BHA and AHA treatments.\u003c\/p\u003e\n\n\u003ch2\u003eCOSRX Refresh AHA BHA Vitamin C Booster Serum benefits: what it does for your skin\u003c\/h2\u003e\n\u003ch3\u003eSmoother texture\u003c\/h3\u003e\n\u003cp\u003eGlycolic acid loosens the dull, dead cells on top, so rough patches soften and skin feels smoother to touch.\u003c\/p\u003e\n\u003ch3\u003eClearer-looking pores\u003c\/h3\u003e\n\u003cp\u003eBetaine salicylate is oil-friendly, so it can work around the pore opening to help reduce blackheads and congestion. Learn more in our \u003ca href=\"\/collections\/ing-salicylic-acid\"\u003esalicylic acid and BHA guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eBrighter, more even-looking tone\u003c\/h3\u003e\n\u003cp\u003eVitamin C and niacinamide support radiance and help the look of dark spots and post-acne marks fade over time. See our \u003ca href=\"\/collections\/ing-vitamin-c\"\u003evitamin C guide\u003c\/a\u003e for more on this antioxidant.\u003c\/p\u003e\n\u003ch3\u003eAntioxidant support\u003c\/h3\u003e\n\u003cp\u003eVitamin C helps defend skin against everyday stress from sunlight and pollution, a real concern in busy Pakistani cities.\u003c\/p\u003e\n\u003ch3\u003eComfort while exfoliating\u003c\/h3\u003e\n\u003cp\u003ePanthenol and allantoin help keep the skin calm and hydrated.\u003c\/p\u003e\n\n\u003ch2\u003eCOSRX Refresh AHA BHA Vitamin C Booster Serum key ingredients\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIngredient\u003c\/th\u003e\n\u003cth\u003eWhat it does\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlycolic acid (AHA)\u003c\/td\u003e\n\u003ctd\u003eWater-soluble exfoliant for surface smoothness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBetaine salicylate (BHA)\u003c\/td\u003e\n\u003ctd\u003eGentle oil-soluble exfoliant for pores\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVitamin C (ascorbic acid)\u003c\/td\u003e\n\u003ctd\u003eBrightening antioxidant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKiwi, dragon fruit and sea buckthorn\u003c\/td\u003e\n\u003ctd\u003eVitamin-rich fruit base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNiacinamide\u003c\/td\u003e\n\u003ctd\u003eSupports even tone and oil balance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePanthenol, allantoin, betaine\u003c\/td\u003e\n\u003ctd\u003eHydration and soothing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eHow to use COSRX Refresh AHA BHA Vitamin C Booster Serum (morning and night)\u003c\/h2\u003e\n\u003ch3\u003eStep by step\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eCleanse with a gentle wash such as the \u003ca href=\"\/products\/cosrx-low-ph-good-morning-cleanser-150ml\"\u003eCOSRX Low pH Good Morning Cleanser\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eUse your usual toner.\u003c\/li\u003e\n\u003cli\u003ePut two or three drops on your fingertips and press onto the forehead and cheeks, then spread over the rest of the face.\u003c\/li\u003e\n\u003cli\u003ePat lightly until absorbed, then moisturise.\u003c\/li\u003e\n\u003cli\u003eIn the morning, finish with sunscreen.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eMorning or night?\u003c\/h3\u003e\n\u003cp\u003eEither works. Vitamin C pairs well with sunscreen in the morning, while evening use gives the acids a quieter time to work. Whatever time you choose, wear SPF the next day, since acids make skin more sun-sensitive.\u003c\/p\u003e\n\u003ch3\u003eCan I use it every day?\u003c\/h3\u003e\n\u003cp\u003eMany people can, once the skin is used to it. Start every other day for the first two weeks, then move to daily if your skin stays comfortable.\u003c\/p\u003e\n\u003ch3\u003eLayering with an essence\u003c\/h3\u003e\n\u003cp\u003eFor extra hydration, follow it with the \u003ca href=\"\/products\/cosrx-advanced-snail-96-mucin-power-essence\"\u003eCOSRX Advanced Snail 96 Mucin Power Essence\u003c\/a\u003e before moisturiser.\u003c\/p\u003e\n\n\u003ch2\u003eWhat not to mix with COSRX AHA BHA Vitamin C Booster Serum\u003c\/h2\u003e\n\u003cp\u003eAvoid using it in the same routine as retinoids, such as the \u003ca href=\"\/products\/celimax-the-vita-a-retinol-shot-tightening-serum-30ml\"\u003ecelimax Vita-A Retinol Shot Tightening Serum\u003c\/a\u003e or the stronger \u003ca href=\"\/products\/celimax-the-vita-a-retinal-shot-tightening-booster-15ml\"\u003ecelimax Retinal Shot Booster\u003c\/a\u003e. A simple plan is to use this serum in the morning and retinoids at night, or alternate nights. Also skip extra acid toners and scrubs on the same day.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with niacinamide?\u003c\/h3\u003e\n\u003cp\u003eYes. It already contains niacinamide, and you can layer a niacinamide serum such as the \u003ca href=\"\/products\/anua-peach-70-niacinamide-serum-30ml\"\u003eANUA Peach 70% Niacinamide Serum\u003c\/a\u003e afterwards if your skin likes it.\u003c\/p\u003e\n\n\u003ch2\u003eIs COSRX Refresh AHA BHA Vitamin C Booster Serum good for sensitive skin?\u003c\/h2\u003e\n\u003cp\u003eIt is milder than many acid serums thanks to betaine salicylate and the soothing ingredients, but it still exfoliates. Sensitive skin should patch-test and start two or three times a week. If you are going through a flare-up, pause actives and focus on gentle hydration. More options are in our \u003ca href=\"\/collections\/concern-sensitivity\"\u003esensitivity\u003c\/a\u003e collection.\u003c\/p\u003e\n\u003ch3\u003eWhat skin type is it best for?\u003c\/h3\u003e\n\u003cp\u003eOily, combination and normal skin with dullness, uneven tone, rough texture or clogged pores benefit most. Dry skin can use it too, followed by a richer moisturiser from our \u003ca href=\"\/collections\/concern-dryness\"\u003edryness\u003c\/a\u003e range.\u003c\/p\u003e\n\n\u003ch2\u003eCOSRX AHA BHA Vitamin C Booster vs other COSRX and niacinamide serums\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSerum\u003c\/th\u003e\n\u003cth\u003eMain focus\u003c\/th\u003e\n\u003cth\u003eChoose it if\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCOSRX Refresh AHA BHA Vitamin C Booster\u003c\/td\u003e\n\u003ctd\u003eExfoliation plus glow\u003c\/td\u003e\n\u003ctd\u003eYou want smoother texture and brightness in one step\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/cosrx-the-vitamin-c-23-serum-20ml\"\u003eCOSRX The Vitamin C 23 Serum\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-strength vitamin C\u003c\/td\u003e\n\u003ctd\u003eDark spots are your main concern and your skin tolerates potent vitamin C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/the-ordinary-niacinamide-10-plus-zinc-1-serum\"\u003eThe Ordinary Niacinamide 10% + Zinc 1%\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eOil and blemish balance\u003c\/td\u003e\n\u003ctd\u003eShine and breakouts bother you more than dullness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCOSRX Refresh AHA BHA Vitamin C Booster Serum results: how long until you see a difference?\u003c\/h2\u003e\n\u003cp\u003eSmoother, softer skin often shows within the first week. A brighter, more even-looking tone and clearer pores usually appear after four to six weeks of consistent use, and faded-looking marks after eight weeks or more, provided you wear sunscreen daily. Pair it with the \u003ca href=\"\/collections\/concern-dark-spots\"\u003edark spots\u003c\/a\u003e and \u003ca href=\"\/collections\/concern-dullness\"\u003edullness\u003c\/a\u003e edits to build a fuller routine.\u003c\/p\u003e\n\u003ch3\u003eTips for the best results\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eApply to fully dry skin after toner; damp skin can make acids tingle more.\u003c\/li\u003e\n\u003cli\u003eUse a small amount; two or three drops cover the whole face.\u003c\/li\u003e\n\u003cli\u003eTake a daylight photo on day one and compare after a month, since gradual changes are easy to miss.\u003c\/li\u003e\n\u003cli\u003eKeep the rest of your routine simple and hydrating while your skin adjusts, for example a \u003ca href=\"\/products\/cosrx-salicylic-acid-daily-gentle-cleanser-150ml\"\u003eCOSRX Salicylic Acid Daily Gentle Cleanser\u003c\/a\u003e on oily days and a plain moisturiser.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDoes COSRX Refresh AHA BHA Vitamin C Booster Serum have side effects?\u003c\/h2\u003e\n\u003cp\u003eA slight tingle is normal for acids. Possible side effects include redness, dryness, flaking or stinging, especially with overuse or on freshly waxed or shaved skin. A few people notice small breakouts in the first weeks as pores clear; if bumps are itchy or spread, stop. Avoid the eye area, stop if irritation lasts and see a dermatologist if it does not settle.\u003c\/p\u003e\n\n\u003ch2\u003eUsing an acid and vitamin C serum in Pakistan's climate\u003c\/h2\u003e\n\u003cp\u003eWith strong sun for most of the year, sunscreen is non-negotiable while you use acids. In humid summers, oily skin may enjoy this serum daily for clearer pores; in dry winters, reduce to every other day and use a richer cream. Keep the bottle closed, cool and out of direct sunlight, because vitamin C is sensitive to heat and light.\u003c\/p\u003e\n\n\u003ch2\u003eCOSRX Refresh AHA BHA Vitamin C Booster Serum price in Pakistan\u003c\/h2\u003e\n\u003cp\u003eA 30ml bottle usually lasts around six to eight weeks of daily use at two to three drops a time. The current price is shown at the top of this page.\u003c\/p\u003e\n\n\u003ch2\u003eOriginal vs fake COSRX Refresh AHA BHA Vitamin C Booster Serum: how to check\u003c\/h2\u003e\n\u003cp\u003eCOSRX is one of the most counterfeited Korean brands, so check closely. A real box and bottle have consistent fonts, a clean dropper, a batch and expiry code and a holographic or sealed finish where COSRX uses one. The serum should be light and fluid with a faint fruity scent; a thick, oily or strongly perfumed liquid is a warning sign. YESBEAUTY is an authentic seller of COSRX in Pakistan, and every bottle is sourced directly from COSRX's official distribution channels in Seoul, Korea. If a product is ever found inauthentic, our 7-day guarantee covers you. Read \u003ca href=\"\/pages\/authenticity-promise\"\u003eour Authenticity Promise\u003c\/a\u003e or browse the \u003ca href=\"\/collections\/cosrx\"\u003eCOSRX range\u003c\/a\u003e, more \u003ca href=\"\/collections\/serums\"\u003eserums\u003c\/a\u003e and our \u003ca href=\"\/collections\/k-beauty\"\u003eK-Beauty\u003c\/a\u003e edit.\u003c\/p\u003e","brand":"COSRX","offers":[{"title":"30ml","offer_id":67806488560007,"sku":"CSX-SR-022-30ML","price":6200.0,"currency_code":"PKR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1112\/5620\/7751\/files\/cosrx-refresh-aha-bha-vitamin-c-booster-serum-30ml-1.jpg?v=1793180302","url":"https:\/\/yesbeauty.pk\/products\/cosrx-refresh-aha-bha-vitamin-c-booster-serum-30ml","provider":"YESBEAUTY","version":"1.0","type":"link"}