ByUR
ByUR Serum Fit Skinny Glow Liquid Foundation (23 Sand)
ByUR Serum Fit Skinny Glow Liquid Foundation (23 Sand)
Rated 4.5 out of 7.0 on @cosme, Japan's largest beauty review site
ByUR Serum Fit Skinny Glow Liquid Foundation in #23 Sand, a serum-like foundation that melts into skin for a glowing finish with SPF50+.
✓ 100% authentic, bought in Japan
✓ Ships from Tokyo in 3 business days
✓ Duties prepaid for US orders
✓ Tracked delivery via Japan Post
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What it is
ByUR Serum Fit Skinny Glow Liquid Foundation in #23 Sand is a Korean liquid foundation with SPF50+ PA+++, 30ml. It applies like a thin serum that melts into the skin, giving medium-to-full but natural coverage with a luminous glow, and skincare ingredients like niacinamide keep skin hydrated so it looks like real, cared-for skin.
Why it's different
It wears like a lightweight serum that melts into skin, so coverage looks natural and glowing rather than mask-like.
Skincare ingredients, including niacinamide and plant extracts, hydrate for a 24-hour moisture feel.
It adds SPF50+ PA+++ protection, so daily sun defense is built into your base.
Key ingredients
Niacinamide: conditions and helps even the look of skin
SPF50+ PA+++: daily protection against UV
How to use
1. After skincare, apply a small amount across the face.
2. Tap it in with the included puff for even, streak-free coverage.
3. Build thin layers where you want more.
4. Concentrate coverage on the center of the face and blend outward.
ByUR Serum Fit Skinny Glow Liquid Foundation (23 Sand)
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 finish and coverage does it give?
It gives a glowing, luminous finish with medium-to-full but natural-looking coverage. The serum-like texture melts in, so it evens the skin while still looking like skin rather than heavy makeup.
Does shade #23 Sand suit my tone?
#23 Sand is a mid-depth neutral shade for light-to-medium skin. Match it to your jaw or neck to check depth, since the glow finish reads best when the shade blends into your natural tone.
Is it hydrating enough for dry skin?
Yes. It carries skincare ingredients like niacinamide and plant extracts for a long-lasting moisture feel, so it suits normal and dry skin. Very dry skin can apply a hydrating serum underneath.
Can I rely on the SPF for the day?
It provides SPF50+ PA+++ when applied generously and evenly. For long time outdoors, layer a dedicated sunscreen underneath and reapply, since foundation is often applied thinly.
We ship internationally from Japan!
International Delivery Rates
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 international shipping take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan. As of 22 July 2026:
- 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
These are estimates only. 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. We offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I have to 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.
I have fair cool undertones. It's moisturizing and has just the right amount of shine. It provides some coverage, but the finish is natural and makes my skin look very beautiful. I finish with powder in areas where I'm concerned about shine. Even the lightest foundation seems a little dark, so if you're someone like me, By Your 17 Tone might be easy to use and blend well.
It looks nice when spread. However, it separates quite a bit. Even if you shake it vigorously, it separates, so you need to blend it in with your hands before using it.
It came with a sample when I bought the powder, and I liked it so much I bought the full version. First of all, it spreads really well. It's dewy and covers my skin, which has many skin problems, beautifully without being too thick, making it look like someone with beautiful natural skin. It's particularly good at covering pores. It doesn't crumble easily, so all you need to do is blot it with a tissue and apply powder. I think many reviews of this foundation have mentioned separation, and in the sample it certainly did seem like the oil and foundation separated. However, the actual product is divided into two layers in the bottle, so I shake it lightly before use and haven't noticed any separation whatsoever. I personally have no negative comments.
I was looking for a liquid foundation with good coverage and shine, and I found this product after reading reviews. It has the most lustrous shine of any I've used so far, and I'm very satisfied with it. It also has better coverage than the SHISEIDO foundation I used previously. I found that the shine was more pronounced when I spread it on rather than tapping it on with my fingers. It tends to crease a little when first applied, so I applied a thin layer of loose powder, used a keep mist, and left it for a while, and it blended in nicely and fit nicely. By the evening after use, it had crumbled a little, but I think it lasted quite well. I apply a thin layer of loose powder in areas where I want to maintain the shine, and then apply a thicker layer of loose powder in areas that are prone to crease.
It fits perfectly and doesn't feel thick, making it look beautiful! I was unsure which foundation to use, but this looks like it will become my favorite.