Here are the product details for Guanjing (GuanJing Beauty) Kojic Acid Face Serum – 40 ml:

Made in China

Product Overview

• Name: Guanjing / Guanjing Beauty Kojic Acid Face Serum – 40 ml
• Origin: China
• Marketed towards brightening, anti‑wrinkle, nourishing, firming benefits with kojic acid, niacinamide, and hyaluronic acid.

Key Features & Benefits

• Kojic Acid: Helps reduce dark spots and hyperpigmentation by inhibiting melanin production (commonly used concentration ~1–2%)
• Niacinamide: Brightens uneven skin tone, boosts barrier function.
• Sodium Hyaluronate / Glycerin: Deep hydration and skin plumping.
• Other Actives: Grape leaf extract, licorice root, possibly antioxidants and softening agents.
• Lightweight, fast-absorbing serum texture suitable for layering under moisturizer or sunscreen.
• Designed for daily use (face and neck) after cleansing and toning; gentle massage until fully absorbed.

Ingredients (INCI format approximate list)

• Aqua (Water), Glycerin, Propylene Glycol, Kojic Dipalmitate, Niacinamide, Sodium Hyaluronate, Vitis Vinifera (Grape) Leaf Extract, Dipotassium Glycyrrhizate (Licorice), PEG/PPG copolymers, Triethanolamine, Xanthan Gum, PEG‑40 Hydrogenated Castor Oil, fragrance and stabilizers like microcrystalline cellulose and iron oxides.

How to Use

1. Cleanse and tone skin thoroughly.
2. Use a few drops of serum on face and neck.
3. Gently massage until absorbed.
4. Apply sunscreen during daytime use, as kojic acid is photosensitizing.
5. For best results, use daily or as tolerated (depending on skin sensitivity).

Safety & Precautions

• Patch test recommended before first full-face use due to potential for irritation or sensitivity from kojic acid. Discontinue if redness or stinging occurs .
• Sun protection is essential, as kojic acid can increase UV sensitivity. Use broad-spectrum SPF during the day.
• Storage: Keep away from direct sunlight and heat to maintain product stability and color. Oxidation may cause darkening—stop use if stored improperly or expiry passes.

Community Insights

• Users on skincare forums caution: kojic acid does not cause purging in the traditional sense (since it's not an exfoliant), but some have reported tiny bumps or irritation, possibly due to formulation or overuse.
• Some Reddit users reported chemical burns or pigmentation reactions when using untested or low-quality kojic acid products from unofficial source.
• Always verify brand authenticity and source to avoid low-quality or counterfeit products.

Suggested Website Listing Format

Guanjing Kojic Acid Face Serum – 40 ml

Brightening serum combining kojic acid, niacinamide, and hyaluronic acid to help fade dark spots, even skin tone, and hydrate skin with a fast-absorbing, lightweight texture.

Benefits

• Helps reduce pigmentation and dark spots
• Brightens and lightens skin tone gradually
• Deeply hydrates and softens skin

How to Use

• After cleansing and toning, apply 2–3 drops to face and neck
• Massage until fully absorbed; follow with moisturizer
• Use sunscreen in the morning

Precautions

• Patch test before use; discontinue if irritation occurs
• Avoid direct sun exposure; always use SPF during daytime
• Store in a cool, dry place away from sunlight

Ingredients (partial INCI shown on packaging)