Shopping Cart

0

Your shopping bag is empty

Go to the shop

TIRTIR – Niacinamide 20% Serum

€27,45

Hikari Perks

  • Complimentary Deluxe Sample with every order
  • Free Shipping on orders over €40
  • Flexible Payment with Klarna (pay later options)

Delivery

All orders are shipped with PostNL or DHL.

Free shipping on orders over €40.

All orders receive a tracking number.

Returns

Items can be returned within 14 days of delivery in original condition for a full refund or store credit.

Refunds are issued to the original payment method.

Customers are responsible for return shipping costs. Original shipping fees are non-refundable.

Sale items are final and cannot be returned.

Help

Have questions or concerns?

Email: [email protected]

Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

All orders are shipped with PostNL or DHL.

Free shipping on orders over €40.

All orders receive a tracking number.

Returns

Items can be returned within 14 days of delivery in original condition for a full refund or store credit.

Refunds are issued to the original payment method.

Customers are responsible for return shipping costs. Original shipping fees are non-refundable.

Sale items are final and cannot be returned.

Help

Have questions or concerns?

Email: [email protected]

Ask a Question

TIRTIR – Niacinamide 20% Serum

TIRTIR – Niacinamide 20% Serum

€27,45

Type: Brightening & Firming Face Serum


Description

TIRTIR's Niacinamide 20% Serum is a potent, multi-functional serum designed to address various skin concerns, including dullness, uneven tone, enlarged pores, and signs of aging. Formulated with a high concentration of 20% niacinamide, it works synergistically with alpha-arbutin and glutathione to brighten the complexion, reduce hyperpigmentation, and promote a radiant, youthful glow.

The inclusion of retinol and zinc PCA provides effective anti-aging benefits by smoothing fine lines and regulating sebum production, making it suitable for oily and combination skin types. Multiple forms of hyaluronic acid deeply hydrate and strengthen the skin barrier, enhancing elasticity and resilience.

This lightweight, fast-absorbing serum is dermatologically tested and suitable for all skin types, including sensitive skin. Incorporate it into your daily skincare routine to achieve a smoother, brighter, and more even-toned complexion


Recommended for

  • Dull or uneven skin tone

  • Hyperpigmentation and dark spots

  • Enlarged pores

  • Fine lines and wrinkles

  • Oily and combination skin

  • Sensitive skin


How to Use

  1. After cleansing and toning, apply 2–3 drops of the serum to your face.

  2. Gently pat into the skin until fully absorbed.

  3. Follow with your preferred moisturizer.

  4. Use daily, morning and evening.

  5. Apply sunscreen during the day to protect the skin.


Key Ingredients

  • Niacinamide (20%): Brightens skin tone, reduces hyperpigmentation, and minimizes pores.

  • Alpha-Arbutin (2%): Enhances radiance and diminishes dark spots.

  • Glutathione: Provides antioxidant benefits and promotes an even complexion.

  • Retinol: Stimulates collagen production and reduces fine lines.

  • Zinc PCA: Regulates sebum production and soothes irritation.

  • Hyaluronic Acid Complex: Deeply hydrates and strengthens the skin barrier.

Shipping Information

At Hikari Skincare, we strive to deliver your order as quickly and safely as possible. We ship directly from our warehouse in Europe, 6 days a week.

  • Same‑day shipping: Orders placed before 23:30 (Sunday–Friday) are processed and dispatched the same day.
  • Sustainable packaging: We use eco‑friendly materials for all our shipping boxes.

We want you to enjoy our high‑quality products without delay.

Have questions about shipping or returns? View our Shipping Policy or Refund & Returns Policy for full details.