#OOTD Vitamin C Facial Serum 1.69 fl oz — 10,000 ppm Ascorbic Acid, Hydrating Vitamin Tree Water

#OOTD Korean Vitamin C Facial Serum is a concentrated 1.69 fl oz hydrating face serum formulated with 10,000 ppm ascorbic acid and vitamin tree water to brighten and nourish skin.

This lightweight serum blends a potent dose of vitamin C (ascorbic acid) with vitamin tree water to deliver antioxidant-rich hydration and a smoother-looking surface. Designed for daily skincare use, the formula absorbs quickly without heavy residue, making it easy to layer under moisturizers or sunscreens. The 1.69 fl oz size is convenient for at-home routines and travel, while the formulation aims to support a more even, luminous complexion when used consistently.

How does this serum fit into a morning or evening routine?

Apply after cleansing and toning, before heavier creams and oils. In the morning, follow with a broad-spectrum sunscreen to protect skin; at night, pair it with a hydrating moisturizer to lock in benefits. Start slowly if you have sensitive skin, using alternate days until tolerance builds.

• Use 2–3 drops per application, dabbed across face and neck.
• Allow 30–60 seconds to absorb before layering other products.
• Morning use requires daily sunscreen; evening use works well with richer moisturizers.

What makes the 10,000 ppm ascorbic acid level significant?

The serum’s 10,000 ppm concentration delivers a high-strength vitamin C presence intended to provide visible brightening and radiance support. This potency is designed for users seeking more concentrated vitamin C effects than typical low-percentage serums. Because high-strength vitamin C can be more active on skin, formulation balance with hydrating agents helps reduce irritation risk.

• 10,000 ppm ascorbic acid for concentrated antioxidant support.
• Paired with vitamin tree water to add hydration and soothing properties.
• Fast-absorbing texture minimizes tackiness for easy layering.

How should people with sensitive or reactive skin use this product?

Sensitized or reactive skin types should introduce the serum gradually and monitor for redness or stinging. Consider a patch test on the inner forearm for 24–48 hours before full-face use. If irritation occurs, reduce frequency or discontinue and consult a dermatologist.

• Begin with once or twice weekly applications, increasing slowly.
• Mix a single drop into your moisturizer to dilute during the adjustment period.
• Discontinue if persistent irritation or severe redness develops.

What visible benefits can users expect and how quickly?

With consistent use, many users notice improved skin brightness and a more even tone within several weeks. Texture appears smoother as hydration improves, and the lightweight formula helps maintain skin comfort without oiliness. Individual results vary depending on baseline skin condition and routine consistency.

• Brighter-looking complexion with regular application.
• Smoother skin texture due to hydrating vitamin tree water.
• Less greasy finish, suitable for layering under SPF or night creams.

Who is this for: The #OOTD Korean Vitamin C Facial Serum is aimed at people seeking a high-potency vitamin C product that also hydrates—ideal for those wanting brighter, more even-looking skin in a lightweight, fast-absorbing serum. It suits normal, combination, and dry skin types who can tolerate concentrated vitamin C; sensitive-skin users should introduce the product gradually. This 1.69 fl oz bottle works well for daily routines at home or for travel-ready skincare.

Ingredients

Water, Isopentyldiol, Glycerin, Water, 1,2-Hexanediol, Ascorbic Acid, Betaine, Hydroxyethylcellulose, Butylene Glycol, Sodium Citrate, Tromethamine, Water, Butylene Glycol, 1,2-Hexanediol, Sodium Hyaluronate, Propanediol, Polyglyceryl-10 Laurate, Ethylhexylglycerin, Dipotassium Glycyrrhizate, Disodium EDTA, Water, Water, Butylene Glycol, 1,2-Hexanediol, Beta-Glucan, Water, Butylene Glycol, Glycerin, 1,2-Hexanediol, Hippophae Rhamnoides Fruit Extract, Ascorbyl Glucoside