
Isntree
A concentrated serum containing 1,250ppm onion bulb extract, niacinamide, and ceramides to strengthen the skin barrier and improve skin texture. Formulated with three types of hyaluronic acid and panthenol for deep hydration and soothing benefits.
Solvent and humectant for ingredient delivery
Humectant that attracts and retains moisture
Humectant and skin brightening agent
+ 15 more ingredients

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The key active ingredients in Onion Newpair Booster Shot 2000 by Isntree include Glycerin (Humectant that attracts and retains moisture), Glycereth-26 Niacinamide (Humectant and skin brightening agent), Olive Oil (Emollient rich in fatty acids and antioxidants), Onion Bulb Extract (Antioxidant and skin-soothing agent), Hydrolyzed Sea Sponge (Exfoliant and skin texture refining agent). Seoul Sister tracks ingredient effectiveness across 5,900+ K-beauty products to provide data-backed recommendations.
Onion Newpair Booster Shot 2000 is a Korean serum by Isntree. Sensitive skin compatibility depends on individual triggers and allergies. Seoul Sister's AI advisor Yuri analyzes all 20 ingredients against your specific skin type, concerns, and known allergens to provide a personalized compatibility score. Common irritant ingredients like fragrance, alcohol denat, and essential oils are flagged automatically.
For oily skin, the key factors in evaluating Onion Newpair Booster Shot 2000 are comedogenic ingredient ratings, oil content, and finish type. This serum contains 5 active ingredients. Seoul Sister's database cross-references each ingredient's comedogenic rating (0-5 scale) against your skin type to identify potential pore-clogging risks. Subscribe for a personalized oily skin compatibility analysis.
Onion Newpair Booster Shot 2000 by Isntree is sold through authorized retailers and the brand itself. Buy from an authorized retailer or the brand's own site rather than an open marketplace. Olive Young Global ships to most countries but no longer ships to the US. Seoul Sister tracks counterfeit indicators to help you buy genuine Korean skincare. We are an advice platform and never sell products ourselves.
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Sulwhasoo First Care Serum is a $90+ luxury product, which makes it one of the most counterfeited items in K-beauty. Here are five verifiable checks (from packaging weight to barcode origin) to confirm your bottle is real before it touches your face.