How long does it take for TERGlow orders to arrive?

You'll get a tracking number via email as soon as your order ships. Most orders arrive within 2–5 business days in the U.S.

Are TERGlow products authentic?

Yes, all products are 100% authentic and sourced directly from Korea and Japan.

How can I track my TERGlow order?

You can check your tracking status anytime at account.terglow.com/orders. We'll also send a tracking number by email once your order ships.

Do you ship internationally from TERGlow?

At this time, TERGlow only ships within the United States. We're actively exploring international shipping options.

What should I do if my TERGlow order hasn't arrived?

Check your tracking link at account.terglow.com/orders. If delayed, contact us at hello@terglow.com and we'll help.

Why should I become a SKINPASS member?

Becoming a SKINPASS member gives you free shipping on all orders with no minimum purchase required. It's a convenient and cost-effective way to stay consistent with your skincare routine and save more over time.

How do I become a SKINPASS member?

You can become a SKINPASS member by purchasing the membership directly on our site. Once you sign up, your free shipping and exclusive perks begin right away.

Can I cancel or pause my SKINPASS membership?

Yes. SKINPASS comes with a 7-day free trial. After that, it's $6.99/month or $69.99/year. You can cancel or pause at any time from your account dashboard.

How do exchanges work?

To exchange a product, please return the item first, ensuring it is sealed in its original packaging, as we sell beauty and cosmetic products. Opened products are not accepted. Once your return is approved, you will receive a refund and can place a new order.

How will I be refunded?

If your return is approved, you'll be refunded to your original payment method within 10 business days. Processing times by banks or credit card companies may vary.

What if I haven't received my refund?

If more than 15 business days have passed since approval, please contact us at hello@terglow.com and we'll assist you further.

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TIRTIR

TIRTIR Niacinamide 20% Serum 30ml | Brightening & Anti-Aging Korean Skincare with Retinol & Glutathione

Low stock

$24.99 USD

Sale Sold out

Taxes included. Shipping calculated at checkout.

Quantity

✨ 100% Authentic – Sourced directly from Korea
📅 Best By: 09/2027
🔖 UPC: 8809928132969
✅ Return accepted within 30 days
📦 Ships Fast from the USA

Looking to brighten dark spots, fight signs of aging, and even your skin tone? The TIRTIR Niacinamide 20% Serum is a high-performance Korean skincare treatment formulated with a potent 20% niacinamide blend—clinically proven to fade hyperpigmentation, refine texture, and reduce pore appearance.

Boosted with encapsulated retinol, glutathione, and adenosine, this serum tackles dullness, fine lines, and discoloration for a brighter, youthful glow. The lightweight, non-sticky texture absorbs quickly and layers beautifully under moisturizer or SPF.

This is your ultimate glow-boosting serum—perfect for skincare lovers targeting real results with a gentle yet powerful formula.

Ingredients

Water, Niacinamide, Glycerin, Butylene Glycol, Propanediol, Alpha-Arbutin, 1,2-Hexanediol, Hydroxyacetophenone, Retinol, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Brassica Campestris (Rapeseed) Sterols, Cholesterol, Polyglyceryl-10 Laurate, Glutathione, Zinc PCA, and more.
Please note that ingredient lists may change or vary over time. For the most accurate and up-to-date information, refer to the product packaging or the manufacturer's official website.

View full details

Why You'll Love It
🌟 20% Niacinamide Power: Visibly reduces dark spots, acne marks & uneven tone
💊 Encapsulated Retinol: Softens wrinkles & stimulates skin renewal without irritation
✨ Glutathione + Adenosine: Brightens and firms dull, tired skin
💧 Smooth, Lightweight Texture: Fast-absorbing, no sticky finish
🌿 Barrier-Friendly Formula: Soothes and protects sensitive skin
🧪 Clinical-Grade Results: Proven brightening & anti-aging ingredients
Features & Benefits
✔️ High-Concentration Niacinamide (20%)
✔️ Targets Hyperpigmentation & Fine Lines
✔️ Boosted with Retinol for Anti-Aging
✔️ Safe for Sensitive & Acne-Prone Skin
✔️ Non-Greasy, Quick-Absorbing Formula
✔️ Works Well with Most Routines
How To Use
① After cleansing and toning, apply 1–2 pumps to face
② Gently pat into skin until fully absorbed
③ Follow with moisturizer and SPF in the morning
④ Use at night for intensive brightening and anti-aging support
⑤ Begin using 2–3 times a week and gradually increase to daily use

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Product FAQ

Is 20% niacinamide too strong for sensitive skin?

While potent, this formula includes soothing ingredients like panthenol and allantoin to reduce irritation—start slowly and patch test if needed.

Can I use this with vitamin C or AHA/BHA products?

Yes, but it’s best to alternate use or apply at different times (e.g., niacinamide in the evening, vitamin C in the morning) to avoid overstimulation.

How long before I see results?

Most users report visible improvement in brightness and texture within 2–4 weeks of consistent use, with continued benefits over time.

I have used a few products before and tbh they're so good, i noticed the visible change on my skin. I would love to use those products again.

Looove my order as always!!! I like how they ship everything out really fast and this is my go to online store for most of the popular Korean skincare products. I highly recommend TER Glow to all the girlies who love K-beauty out there

I’ve been using a few products from Terglow and honestly, I’m loving them so far. My skin feels a lot more hydrated and it doesn't leave that greasy feel on your face. Like I said, it's not too heavy or greasy and they actually feel like they’re doing something. Packaging is also really clean and simple, which I like fast shipping too! Would order again.

I recently discovered TER, and it's quickly become my go-to place for skincare! The selection is fantastic — they carry a wide range of trusted brands along with some hidden gems that you won’t find at big-box stores. Whether you're looking for something to hydrate, treat acne, brighten dull skin, or just maintain a solid routine, they have options for every skin type and concern.

T.E.R is my go-to destination for premium Korean and Japanese skincare products. Their curated selection features top-quality items that cater to various skin types and concerns. The website is user-friendly, and their customer service is exceptional—prompt, helpful, and always professional. Shipping is fast, and products arrive well-packaged. I've discovered some of my favorite skincare gems here, and I appreciate their commitment to authenticity and quality. Highly recommend T.E.R to anyone looking to elevate their skincare routine.

TIRTIR Niacinamide 20% Serum 30ml | Brightening & Anti-Aging Korean Skincare with Retinol & Glutathione