Dark Spot Problems?

If you are not satisfied with your current brightening care, perhaps it is because the active brightening ingredients were not delivered to the depth of the skin where the problem began. Learn more=>

b.glen has remedied skin problems for 2M+ customers in Japan and across Asia. Results-driven skincare using only pure, evidence backed ingredients. Featuring medical-grade penetration technology, QuSome®, all products are made in Japan.





Brian Keller PharmD.
Obtained his PhD at the University of California at San Francisco (UCSF), where he taught as a professor. He has conducted research on the Drug Delivery System, which led to the discovery of QuSome®, a revolutionary process for encapsulating ingredients. Dr. Keller is our Chief Scientific Officer with 40+ years experience who has developed 12 patents in 12 countries.

Miyaka Sato MD
Dermatologist: Miyaka Sato MD Director of Quesque Skin Clinic. Graduated from Sapporo Medical University. With using Arbutin, Vitamin C, and Hydroquinone, she developed a level-up method for her patient’s at-home care.She also holds the licenses for Jubiterm Vista Certified Physician, Botox Vista certified doctor and many more.

Arbutin & Pure Vitamin C
High Performance Brightening Serum Duo

Most Vitamin C products contain unstable concentrations, which expire quickly, and have difficulty permeating through the dermal layer of skin. QuSome encapsulates the Vitamin C nutrients, allowing deeper delivery, and fast results.

Reduced visibility dark spots on her cheek: This customer is using b.glen’s Brightening Care Trial Set for one week, then continued her skincare routine with C serum and Qusome PowerBright for 6 weeks.

Reduced dark circles after using b.glen Brightening care trial set for one week, then continued her skincare routine with C serum and Qusome PowerBright for 60 days.

Other Brands’ Orange-Tinted Vitamin C Serum is Actually Expired!

Most vitamin C serums turn yellow or brown after some time. That color is actually “rust” resulting from oxidized vitamin C. Even with a high-concentration vitamin C serum, the effect of oxidized vitamin C is halved. Our tube is designed to keep air out, crucial to maintaining vitamin C fresh.

According to Dr. Brian Keller, the Chief Scientific Officer at b.glen skincare,

“We ran a test on a 5% vitamin C cream and measured the vitamin C concentration over time. At the start, the concentration was 5%, and after 30 days, the concentration was a loss of 25%. 6 months later, the total loss was greater than 65%.”

So, the older your serum, the less effective it will be.

And no matter how much concentration of vitamin C the product has, if it doesn’t penetrate deep into your skin, it won’t do anything to improve it. Our QuSome technology stabilizes and enables high concentration for best results without added damage or stress. Our C Serum contains only the good stuff, Pure Vitamin C.

Active ingredients will not work if they are staying at the skin surface.
And, here is the solution by b.glen’s proprietary technology:

Medical-grade penetration technology, QuSome® allows for complete penetration and absorption of ingredients. When encapsulated within QuSomes, potent ingredients effectively treat your skin concerns from the root of the issue.

Skin absorption demonstration using “cultured” skin* showing fluorochrome encapsulated QuSome lotion vs a non-QuSome fluorochrome lotion 6 hours after application.

*Cultured skin is a synthetic skin product used in non-animal testing facilities that mimics real skin for testing purposes.

Transdermal Absorption Comparative Test: Cross sectional photograph of cultured skin 6 hours after Fluorochrome lotion was applied.
Test number: NDR-CO-14111201KD
(Test conducted by Nicoderm Research, KK.)

Meah.C / Pro Surfer
PowerBright has worked amazingly well, when applied on top of C Serum. My skin, in just a few weeks, has become much more even-toned.

Rose.K
I noticed an immediate difference in my skin while using b.glen. The texture, tone, and overall appearance of my skin felt better. Overall, my skin felt tighter and smoother.

Naoka.I
I have been looking into the brightening cosmetics for a long time, and finally found this awesome care set including Arbutin and Vitamin C. I no longer worry about aging spots while enjoying golfing.


Q. How does the 365-day money-back Guarantee work?
A. If you are not satisfied with b.glen products for any reason, please contact our Customer Service directly within 365 days of the purchase date, and you receive a full refunded. However, this is valid only once for each product.


Q. How much are the shipping costs, and how long it takes for the delivery?
A. For trial set, shipping is free of charge within the US. (There are shipping fees outside of the US). It may depend on your location, but it tends to take 3-7 business days via ground shipment.


Q. Is there a Customer Service phone number?
A. Our customer service team is available via phone or Email to assist your orders, use of treatments and any skincare related concerns from 8:00 a.m. to 5:00 p.m. Monday to Friday (PST).
Email: info@bglen.us
Phone: 1-888-882-2220


Q. Are the ingredients in these products safe for sensitive skin?
A. Safety is the most important value for our product development, and it has been proven through in-house and external testing. For sensitive skin, we recommend testing with a small amount first (patch test).


Q. Is it better to apply my skincare in the morning or in the evening?
A. Well, our Qusome PowerBright may be used during the day as well as the night, so we would highly recommend repeating both morning and night time routine on a daily basis which can bring optimal and faster results.


Q. Can I buy the products in store?
A. Currently our product is available at Allure store in New York: 191 Lafayette St, New York, NY 10013.
As our online store has free shipping + 365 days money back guarantee, we are trying our best to make your online shipping as convenient as shopping at a physical stores as well.


*This information does not constitute medical advice and should not be taken as such. Always consult your doctor before changing your usual medical treatment.