• Usage Rate: 1–4% (Recommended: 2–3%)
• Compatible Actives: Alpha Arbutin, Niacinamide, Vitamin C, Licorice Extract
• Storage: Store in airtight container away from light & heat

Kojic Acid Powder – Skin Lightening Active for Brightening & Pigmentation

Kojic Acid is a naturally derived skin-brightening ingredient used extensively in cosmetic formulations for hyperpigmentation and melasma. It works by inhibiting tyrosinase, an enzyme involved in melanin production. Kojic Acid is water-soluble and stable when formulated within the correct pH range. Ideal for DIY skincare serums, brightening creams, soaps, and face masks. Use with a stabilizer like Sodium Metabisulfite for better shelf life.

INCI Name: Kojic Acid

CAS Number: 501-30-4

Solubility: Water-soluble

Add Phase: Cool-down phase

pH Stability: 4.0 – 5.5

Processing Temperature: Below 40°C

Appearance: White crystalline powder

Odor: Odorless

Molecular Formula: C6H6O4

Molecular Weight: 142.11 g/mol

Flash Point: > 100°C

Density: ~1.1 g/cm³

Chemical Type: Organic acid

Functional Groups: Hydroxyl, Ketone

Primary Cosmetic Uses: Skin whitening creams, spot correctors, soaps, face serums

✔️ Oily

✔️ Combination

✔️ Acne-Prone

✔️ Hyperpigmented

❌ May cause sensitivity in very dry or reactive skin

Always use Kojic Acid in a pH-balanced formula (around 4–5.5) and pair with UV protection in daytime products to prevent skin sensitivity. Add a chelating agent or antioxidant for stability!

✔️ Oily

✔️ Combination

✔️ Acne-Prone

✔️ Hyperpigmented

❌ May cause sensitivity in very dry or reactive skin

1. Brightening Serum (Day/Night Use):

2% Kojic Acid

4% Alpha Arbutin

0.5% Sodium Metabisulfite

0.5% Hyaluronic Acid

Distilled Water to 100%

pH adjusted to ~5.0

2.Anti-Pigmentation Cream:

3% Kojic Acid

2% Niacinamide

2% Licorice Extract

Base Cream to 100%

Preservative as needed

Serums
⭐⭐⭐⭐⭐ – Excellent
🟩🟩🟩🟩🟩


Creams & Lotions
⭐⭐⭐⭐⭐ – Excellent
🟩🟩🟩🟩🟩


Toners
⭐⭐⭐⭐☆ – Good
🟩🟩🟩🟩⬜


Face Masks
⭐⭐⭐⭐☆ – Good
🟩🟩🟩🟩⬜


Cleansers
⭐⭐⭐☆☆ – Reasonable
🟨🟨🟨⬜⬜


Hair Masks
☆☆☆☆☆ – Not Applicable
🟥⬜⬜⬜⬜


Deodorants
☆☆☆☆☆ – Not Suitable
🟥⬜⬜⬜⬜


Eye Creams
⭐⭐☆☆☆ – Fair
🟧🟧⬜⬜⬜


Shampoos
☆☆☆☆☆ – Not Applicable
🟥⬜⬜⬜⬜


Soaps
⭐⭐⭐⭐☆ – Good
🟩🟩🟩🟩⬜


Conditioners
☆☆☆☆☆ – Not Applicable
🟥⬜⬜⬜⬜


Lip Balms
☆☆☆☆☆ – Not Suitable
🟥⬜⬜⬜⬜


Body Butters
⭐⭐☆☆☆ – Fair
🟧🟧⬜⬜⬜


Ointments
⭐⭐☆☆☆ – Fair
🟧🟧⬜⬜⬜

Q1: Can Kojic Acid be used with Vitamin C?

Yes, it pairs well with Vitamin C for enhanced brightening and antioxidant benefits.

Q2: How do I prevent Kojic Acid from oxidizing?

Store it in airtight, opaque containers and use antioxidants like Sodium Metabisulfite.

Q3: Can I use it in soaps?

Yes, it can be added to melt & pour soaps but may discolor slightly over time due to oxidation.