B-Boost 1% Kojic Acid Serum 30ml

Regular price £15.50
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This brightening serum is powered by Kojic Acid, Niacinamide, and Tranexamic Acid to target hyperpigmentation, dark spots, and uneven skin tone. With the added support of a Peptide Complex, it boosts elasticity and firmness for healthier, youthful-looking skin. The gentle, alcohol-free formula is free from essential oils, artificial colorants, and fragrances, making it safe for sensitive skin while delivering visible radiance and clarity.

K-Benefits:

  • Brightening & Dark Spot Care: Formulated with 1% Kojic Acid and 10% Niacinamide to effectively fade hyperpigmentation, dark spots, and acne marks while improving overall radiance.

  • Targeted Pigmentation Control: 2% Tranexamic Acid combats stubborn pigmentation and melasma, revealing a more even-toned complexion.

  • Firmness & Repair: A Peptide Complex boosts skin elasticity, supports cell regeneration, and accelerates the skin’s natural healing process.

  • Barrier Strengthening: Niacinamide helps restore the skin barrier and reduce redness or irritation.

  • Gentle Formula: Free of alcohol, essential oils, artificial fragrances, and colorants, making it suitable for sensitive skin.

K-Targets
  • Persistent dark spots, hyperpigmentation, and stubborn: melasma resistant to regular treatments
  • Uneven skin tone, discoloration, and patchiness: caused by sun damage or hormonal imbalance
  • Dull, tired-looking: and lackluster skin lacking brightness and radiance
  • Early signs of aging: including fine lines, wrinkles, and gradual loss of firmness and elasticity
  • Weakened or compromised skin: barrier that needs repair and strengthening
  • Post-acne marks, redness: and lingering blemishes that disrupt overall skin clarity
  • Inflammation, irritation, and skin sensitivity: triggered by external aggressors such as pollution, UV exposure, or harsh products

Skin Types: Suitable for all skin types — including dry, oily, combination, sensitive, and pigmentation-prone skin.

How to Use
  • Cleanse: Start with a gentle cleanser to remove dirt, oil, and impurities.
  • Tone: Apply your favorite toner to balance skin’s pH and prep for absorption.
  • Dispense: Place a few drops of the ampoule onto your fingertips.
  • Apply & Massage: Gently apply across face and neck, massaging in upward circular motions while avoiding the eye area.
  • Moisturize: Finish with a moisturizer to lock in hydration and nourishment.
Ingredients

K-Ingredients:

  • Kojic Acid (1%) – Inhibits melanin production to visibly fade dark spots, hyperpigmentation, and melasma.
  • Niacinamide (10%) – Brightens dull skin, strengthens the skin barrier, balances oil, and calms redness.
  • Tranexamic Acid (2%) – Targets stubborn pigmentation and discoloration for a more even skin tone.
  • Peptide Complex – Boosts skin elasticity, supports cell repair, and helps smooth fine lines.
  • Panthenol – Provides deep hydration and soothes irritation, keeping skin soft and balanced.

 

Full Ingredients:

Water, Niacinamide, Methylpropanediol, Glycerin, Panthenol, Tranexamic Acid, 1,2-Hexanediol, Kojic Acid, Hippophae Rhamnoides Extract, Ascorbyl Glucoside, Dipropylene Glycol, Hydroxyacetophenone, Glutathione, Butylene Glycol, Caprylyl Glycol, Carbomer, Arginine, Tocopherol, Glycereth-26, Disodium EDTA, Betaine, Phellodendron Amurense Bark Extract, Astragalus Membranaceus Root Extract, Scutellaria Baicalensis Root Extract, Coptis Chinensis Root Extract, (-)-Alpha-Bisabolol, Dipotassium Glycyrrhizate, Sodium Hyaluronate, Ethylhexylglycerin, Hexapeptide-9, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Acetyl Hexapeptide-8, Nonapeptide-1

 

Notes: Ingredients subject to change at manufacturer's discretion. For the most complete and up-to-date list of ingredients, please refer to product packaging.

 

For more information please read full disclaimer here.

Shipping & Collection

Standard Delivery: £3.99 (2-3 working days)

Free Standard Delivery: On orders over £30 (2-3 working days)

First Class Delivery: £5.50 (1-2 working days)

Portsmouth Local Delivery (PO1-PO6): £5.50 for same-day delivery (order by 1PM).

Free Collection from Kosmobox store: 1 Albert road, Southsea PO5 2SE

Please check our Return & Refund policy.

  • Free shipping for UK order over£30

  • Free samples with every order

  • Free collection from store