Cosrx The Niacinamide 15 Serum 20ml

Name: Cosrx The Niacinamide 15 Serum 20ml | Still Beauty
Brand: Cosrx
SKU: STILLB-COSR-006
Price: 32.95 AUD
Availability: InStock

The cosrx the niacinamide 15 serum is a remarkable addition to your skincare routine, specifically designed to address concerns like acne and dark spots. This highly-concentrated serum features a powerful blend of niacinamide at a 15% concentration, which is known for its ability to improve the appearance of uneven skin tone and texture. With its unique formulation, this serum not only targets blemishes but also helps to balance the skin’s oil-water levels, making it suitable for all skin types, particularly oily and acne-prone skin.

Why cosrx the niacinamide 15 Earns Its Place in Your Routine

One of the standout features of the cosrx the niacinamide 15 serum is its formulation enriched with N-acetylglucosamine (NAG). This ingredient works gently to exfoliate the skin while effectively fading hyperpigmentation. This dual-action approach ensures that the serum not only reduces the appearance of dark spots but also promotes a smoother and more radiant complexion.

Another key ingredient is Zinc PCA, which plays a vital role in regulating the skin’s oil production. By balancing the skin’s oil-water levels, this serum helps to minimize the occurrence of breakouts while keeping the skin hydrated and comfortable. Whether you are dealing with persistent acne or occasional blemishes, the cosrx the niacinamide 15 serum can be a game changer in your skincare arsenal.

Key Benefits

Contains 15% niacinamide to enhance skin tone and texture.
N-acetylglucosamine gently exfoliates and helps fade dark spots.
Zinc PCA helps balance oil and hydration levels in the skin.
Suitable for all skin types, especially oily and acne-prone skin.
Supports a more radiant and clear complexion.
Lightweight formula absorbs quickly without leaving a greasy residue.
Made in Korea with high-quality ingredients.

How to Use

Incorporating the cosrx the niacinamide 15 serum into your skincare routine is straightforward and effective. After cleansing your face, proceed to the serum phase. Here’s how to use it:

Apply a few drops of the serum onto your fingertips.
Gently massage the serum onto your skin, starting from the center of your face and working your way outwards.
Allow the serum to absorb fully before applying any additional products.

This serum can be used both in the morning and afternoon. If you choose to apply it in the morning, be sure to follow up with a sunscreen of SPF 30 or higher to protect your skin from UV damage.

As with any new product, it’s advisable to patch test on a small area of skin, especially if you have sensitive skin. If irritation occurs, discontinue use immediately.

Ingredients

Water, Pentylene Glycol, Niacinamide (15%), Butylene Glycol, Acetyl Glucosamine, 1,2-Hexanediol, Zinc PCA, Trehalose, Xanthan Gum, Pullulan, Allantoin, Ethylhexylglycerin, Sodium Phytate, Citric Acid, Tocopherol.

FAQ

Q: Is the Cosrx The Niacinamide 15 Serum suitable for my skin type?
A: Yes, the Cosrx The Niacinamide 15 Serum is suitable for all skin types, but it is particularly recommended for oily and acne-prone skin.

Q: How should I incorporate this serum into my skincare routine?
A: After cleansing, apply a few drops of the serum during the serum phase of your routine. Gently massage it into your skin, starting from the center of your face and working outward.

Q: What is the texture of the Cosrx The Niacinamide 15 Serum like?
A: The serum has a lightweight texture that absorbs easily into the skin, making it comfortable for daily use.

Q: Is this product authentic and how is shipping handled?
A: Yes, all products from Still Beauty are authentic and ship from Australia. Enjoy free standard shipping on orders over $65.

Shipping & Delivery

Order Cosrx The Niacinamide 15 Serum 20ml today and we dispatch it from our Australian warehouse via Australia Post. Standard shipping is a flat $10.00, and orders over $65 ship FREE Australia-wide. Need it sooner? Express Post is available at checkout for $4.95 extra.

Explore more Korean essences & serums at Still Beauty. Curious about the science? Read how niacinamide works for skin.

Weight	0.13 kg
Dimensions	5 × 5 × 15 cm
Brand	Cosrx
Product Type	Essences & Serums
Key Ingredient	Niacinamide
Skin Concern	Acne, Brightening, Dark Spots, Exfoliating
Skin Type	All Skin Types
Volume	20ml
Country of Origin	South Korea

Weight

0.13 kg

Dimensions

5 × 5 × 15 cm

Brand

Cosrx

Product Type

Essences & Serums

Key Ingredient

Niacinamide

Skin Concern

Acne, Brightening, Dark Spots, Exfoliating

Skin Type

All Skin Types

Volume

20ml

Country of Origin

South Korea

Frequently Asked Questions

Is the Cosrx The Niacinamide 15 Serum suitable for my skin type?

Yes, the Cosrx The Niacinamide 15 Serum is suitable for all skin types, but it is particularly recommended for oily and acne-prone skin.

How should I incorporate this serum into my skincare routine?

After cleansing, apply a few drops of the serum during the serum phase of your routine. Gently massage it into your skin, starting from the center of your face and working outward.

What is the texture of the Cosrx The Niacinamide 15 Serum like?

The serum has a lightweight texture that absorbs easily into the skin, making it comfortable for daily use.

Is this product authentic and how is shipping handled?

Yes, all products from Still Beauty are authentic and ship from Australia. Enjoy free standard shipping on orders over $65.

How can you offer such competitive prices?

We keep things simple. By specialising in a curated selection of K-beauty essentials rather than stocking thousands of products, we cut the overhead that drives up prices at larger retailers.

We purchase directly from authorised distributors in high volume, which gives us access to better wholesale rates. Those savings go straight to you — no inflated markups, no middlemen.

Our lean, Australia-based operation means lower warehousing and fulfilment costs, so we can consistently offer prices that rival or beat the competition. We also offer free shipping on orders over $65, and our Price Beat Guarantee automatically monitors competitor prices and adjusts ours to ensure you always pay less.

Is this product authentic?

Yes, 100%. We source every product directly from authorised distributors. Every unit is genuine, factory-sealed, and comes with full manufacturer packaging.

We can provide proof of authenticity upon request. Our reputation depends on selling only legitimate products, and we stand behind every order with our money-back guarantee.

How can I track my order?

Once your order is dispatched, you’ll receive a confirmation email with your Australia Post tracking number. You can also visit our Track Order page to check your delivery status in real time.

You can also check your order status anytime by logging into your My Account page — your tracking number and a direct link to Australia Post will be right there.

If you haven’t received a tracking email within 2 business days of placing your order, please check your spam folder or contact us and we’ll sort it out immediately.

Do you offer any discounts or promotions?

We do! Here’s how you can save:

Price Beat Guarantee — our system automatically checks competitor prices every 12 hours and beats the lowest price. You always pay less, no coupon needed.
Free shipping on orders over $65.
Bulk savings — purchase multiple units and the price per item drops. Check the product page for current tier pricing.
Bundle discounts — buy frequently bought together items and save an extra 5%.

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Can I change or cancel my order after it’s been placed?

We move fast to get your order to you, but if you need to make a change or cancel, reach out to us as soon as possible. If your order hasn’t been packed yet, we can usually update the details or cancel it for a full refund — no questions asked.

Once an order has been dispatched, we’re unable to modify or cancel it. However, you’re welcome to return the unopened product within 30 days for a full refund or exchange.

Need help? Simply use the Chat with Us or Send a Message buttons on this page, or email us at [email protected] — we’ll do our best to accommodate your request.

What should I do if I receive a damaged or incorrect item?

We’re sorry if that happens. Simply contact us within 7 days of receiving your order with a photo of the issue, or email us at [email protected], and we’ll send a replacement at no extra cost — no need to return the damaged item.

If you’d prefer a full refund instead, we can arrange that too. We want you to be completely satisfied with your purchase.

Do you ship internationally?

Currently, we ship within Australia only. We are working on expanding our shipping to international destinations in the near future.

Is my personal information safe?

Absolutely. Our website is protected with SSL encryption, and we comply with Australian privacy laws. We never sell or share your personal data with third parties.

Payment processing is handled by industry-leading providers (Stripe, PayPal) so your financial details are never stored on our servers.

Why should I buy from you instead of a larger retailer?

Because we specialise in curated K-beauty essentials, we offer competitive pricing, faster shipping, and more attentive customer service than big-box retailers. Every order matters to us.

Our Price Beat Guarantee automatically monitors competitor prices across Lila Beauty, KBeauty Australia, Nudie Glow, and Beauty Amora — and beats the lowest listed price. You always get the best deal without having to shop around.

We source directly from authorised distributors, so you get the same genuine product — plus free shipping on orders over $65, and a more personal shopping experience with real human support.

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