SHIRORU
SHIRORU Boost White Serum, 30ml
SHIRORU Boost White Serum, 30ml
Rated 3.7 out of 7.0 by Japan’s largest beauty community
Engrave the memory of whiteness into your skin
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
Couldn't load pickup availability
What it is
This advanced whitening*3 serum, designed by a facial cleansing expert, delivers essential ingredients for sensitive*1 and dull*1 skin within 5 seconds of cleansing*2. Soy-derived phospholipids*4 and sugar squalane*5, which are easily absorbed by the skin, are nano-encapsulated and combined with the active whitening*3 ingredient, tranexamic acid. The oil blends seamlessly into the skin, filling in the gaps between dry stratum corneum, allowing the skin to retain moisture. Tranexamic acid penetrates deep into the stratum corneum, moisturizing and preventing dark spots all at once. Made with 99% beauty ingredients, this serum is designed to provide moisturizing and whitening*3 care while protecting sensitive*1 skin. It contains a 6-free formula that contains no unnecessary ingredients. *Reminds you of a translucent appearance through moisture*1. *2. Suppresses melanin production due to dryness*2. *3. Prevents dark spots and freckles. *4. Moisturizing ingredient: Hydrogenated soybean phospholipid *5. Moisturizing ingredient (quasi-drug).
Ingredients
Tranexamic acid. Other Edelweiss extract, Chamomilla extract (1), Geranium robertii extract, Thyme extract (1), Citrus chinensis extract, Houttuynia cordata extract, Hydrolyzed conchiolin solution, Hydrogenated soybean phosphate lipids, Sugar squalane, Ascorbyl tetra-2-hexyldecanoate, Glycerin, Concentrated glycerin, 1,3-butylene glycol, 1,2-pentanediol, Trimethylglycine, Glycerin mono-2-ethylhexyl ether, Xanthan gum, Polyoxypropylene diglyceryl ether, Polyoxyethylene methyl glucoside, Carboxyvinyl polymer, Potassium hydroxide, Disodium nidecate, Phenoxyethanol
How to use
Use on clean skin after washing your face in the morning and evening. Take an appropriate amount in your hand and apply it well to your skin.
We ship internationally from Japan!
Frequently Asked Questions
Is this authentic?
Yes. We only buy from official retailers and directly from the brands here in Japan. Never resellers, never grey market stock.
We are beauty lovers too, so we know the worry, especially with something you are putting on your face. Authenticity is 100% guaranteed by us.
What are your shipping rates?
On orders under US$75, shipping is a flat US$20 to the United States and US$10 to all other countries.
Orders of US$75 or more ship free, applied automatically at checkout. Your exact shipping cost is shown before you pay.
How long does delivery take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan.
- United States: 12 to 15 business days
- Canada, United Kingdom, France, Germany: 9 to 12 business days
- Australia, New Zealand, Denmark, Finland, India, Indonesia, Italy, Netherlands, Spain, Sweden, Switzerland: 10 to 13 business days
- China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam: 8 to 10 business days
- Rest of the world: 11 to 18 business days
Actual delivery can be affected by customs clearance, seasonal congestion, or carrier delays in the destination country, all of which are outside our control.
Do you offer express shipping?
Yes. As of 22 July 2026, we offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I pay customs or import fees?
US orders: No. As of July 1, 2026, all US orders ship DDP (duties delivered prepaid), meaning we prepay all import duties on our end. Nothing is due at your door.
Orders outside the US: Possibly. Duties and import taxes are set by your local customs authority and are not collected at checkout, so any charges on delivery are your responsibility.
We're working on rolling out prepaid duties for more countries soon.