
Rejuran
A dual serum set featuring niacinamide, arbutin, and hydrolyzed DNA to brighten skin and improve firmness. Contains botanical extracts like blackberry, licorice, and blueberry for antioxidant protection.
Antioxidant and skin soothing botanical extract
Brightening and anti-inflammatory active ingredient
Soothing and anti-inflammatory botanical extract
Antioxidant rich in vitamins and polyphenols
+ 15 more ingredients

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The key active ingredients in Ultimate Glow & Firm Set by Rejuran include Blackberry Leaf Extract (Antioxidant and skin soothing botanical extract), Licorice Root Extract (Brightening and anti-inflammatory active ingredient), Calendula Extract (Soothing and anti-inflammatory botanical extract), Aloe Vera Juice (Soothing hydrator with anti-inflammatory properties), Blueberry Extract (Antioxidant rich in vitamins and polyphenols). Seoul Sister tracks ingredient effectiveness across 5,900+ K-beauty products to provide data-backed recommendations.
Ultimate Glow & Firm Set is a Korean serum by Rejuran. 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 Ultimate Glow & Firm Set are comedogenic ingredient ratings, oil content, and finish type. This serum contains 9 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.
Ultimate Glow & Firm Set by Rejuran 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.
That $11 Korean cleanser outperforming your $38 one is not hiding anything. The low price comes from how the Korean beauty industry is built, not from what is in the bottle. With one geographic catch.
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.