soaddicted
Soaddicted Lash Addict Eyelash Conditioning Serum Advanced B, 5ml
Soaddicted Lash Addict Eyelash Conditioning Serum Advanced B, 5ml
Rated 5.5 out of 7.0 on @cosme, Japan's largest beauty review site
A nightly lash conditioning serum with a fine-brush tip, for glossier lashes with more body, usable over extensions and perms.
✓ 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
Lashaddict Eyelash Conditioning Serum Advance is a lash conditioning serum, 5ml, applied once nightly along the lash root with a fine brush. Built on a nano-peptide complex plus biotin, panthenol, and hyaluronic acid, it conditions lashes toward a healthier, glossier look with more body, and is made to be used alongside lash extensions and perms.
Why it's different
It conditions with a nano-peptide complex plus biotin, panthenol, and hyaluronic acid for glossier, springier-looking lashes.
The very fine brush places a thin line right at the lash root, so a little goes a long way.
It is formulated to be used alongside lash extensions and perms.
Key ingredients
Nano-peptide complex (Myristoyl Pentapeptide-17, Acetyl Tetrapeptide-3): conditioning peptides
Biotin and panthenol: support the look of healthy lashes
Sodium hyaluronate: hydrates the lash-line skin
Pumpkin seed, pea sprout, and clover flower extracts: conditioning botanicals
How to use
1. Once nightly, after cleansing and before other skincare, start with clean, dry lashes.
2. Draw a thin line of serum along the skin at the base of the upper lashes, like a fine eyeliner.
3. Use only a small amount. Let it dry fully before applying anything else.
4. If it spreads beyond the lash line, wipe it away with a damp cotton swab.
Soaddicted Lash Addict Eyelash Conditioning Serum Advanced B, 5ml
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.
Where exactly do I apply it?
On the skin at the base of the upper lashes, like a thin eyeliner, not down the length of the lashes. If your skin is sensitive, place it a brush-width above the lash line.
Can I use it with lash extensions or a lash perm?
Yes. It is made to condition lashes alongside extensions and perms. If you have extensions, you can also check with your salon first.
How soon might I notice a difference?
With nightly use, many people report glossier, springier-looking lashes over a few weeks. Consistency matters more than quantity, and a small amount is enough.
Is there anything to be careful about?
Keep it out of the eyes and use only a small amount, since over-application can irritate. The formula includes isopropyl cloprostenate, a prostaglandin analog common in lash serums. If you are pregnant, have an eye condition, or notice redness or irritation, stop use and speak with a doctor.
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.
Lash Addict Eyelash Conditioning Serum Advanced Once a day, immediately after washing your face at night, apply a very small amount near the base of your eyelashes as if drawing an eyeliner. The serum has a refreshing serum texture that blends easily into the skin. The ultra-fine brush makes it easy to match the curve of your eye, so it's easy to apply from the inner corner to the outer corner. The moisturizing texture makes it easy to blend into the fine parts of your lower eyelashes. It has a light texture that isn't sticky, so you can use it before applying makeup in the morning. Please check it out.
I'm repurchasing this product for the first time in several years. When I was obsessed with eyelash serums, this was the most effective, so I thought I'd try it again. I'm looking forward to it!
I've only been using it for a little less than a week, but I can already feel that my eyelashes have grown longer! I'm not so bothered by the thin, sparse eyelashes I've had in places. It's definitely worth the price! With this kind of effect, I'll probably buy it again even if I run out.
I've been interested in this product for a long time because of the good reviews. It targets the hair growth cycle of eyelashes and contains plant extracts and amino acids that regulate a healthy cycle, directly targeting the roots. I only use it once a day at night, but my eyelashes have become firmer and stronger, and I can see that they are looking a lot healthier than before! Personally, I don't mind pigmentation or itchiness, and it's easy to use like eyeliner. I want volume and density over length, so I plan to keep using it every day until it's gone!
I've used a lot of different eyelash serums, but I really feel this is the one that really helps my eyelashes grow.