Dr.Phil Cosmetics Co., Ltd. will release the medicated whitening*1 serum "G Bright Genius" (¥6,160 tax included) from 'IC.U', its high-performance advanced anti-aging care*2 brand, on Wednesday, September 16, 2026.
This product aims to balance the skin environment so that moisture and translucency circulate, leading to plump, glossy skin with a shiratama-like (soft rice dumpling) bounce.
Dr.Phil Cosmetics proposes "IC.U G Bright Genius"
'IC.U G Bright Genius' was developed based on a beauty-therapy approach.
It will be available at AEON stores nationwide, cosmetics specialty stores, drugstores, and the official sites of Maison KOSE, Rakuten and Amazon.
A beauty-therapy medicated whitening serum focused on spot concerns
According to KOSE's in-house survey, one in three women in their 40s and older cites "spots" as a "skin concern they want to treat with aesthetic medicine."
In response to this result, Dr.Phil Cosmetics combined KOSE's dermatological research with the knowledge of skin specialists to develop a medicated whitening*1 serum.
"G Bright Genius" adopts a skin theory focused on the actions of the whitening*1 active ingredient "glucosylated stable vitamin C derivative*3" and the translucency-care ingredient "glutathione*4." With a new shiratama approach, it aims to condition skin so that moisture and translucency keep circulating.
*1: Prevents the production of melanin and prevents spots and freckles.
*2: Care suited to one's age
*3: L-ascorbic acid 2-glucoside
*4: Moisturizing ingredient
＊Internet in-house survey: conducted in June 2023, n=94 (women in their teens to 70s)
Autumn and winter are the best time for whitening care
Ultraviolet rays are strongest from June to August, and melanin that increases during this period tends to remain in the skin if no countermeasures are taken.
Dr. Mana Hirayama, brand consultant for Dr.Phil Cosmetics, says that whitening care is needed year-round and that autumn and winter, when UV levels drop, are an ideal chance to refresh sun-damaged skin.
According to Dr. Hirayama, because skin turnover slows with age, concerns about sun-induced darkening that is slow to fade increase.
She explains that by combining whitening care and moisturizing care in the harsh dryness of autumn and winter, you can normalize skin turnover and aim for translucent skin.
Three features of "G Bright Genius"
As a medicated whitening*1 serum that leads to skin with radiant firmness, gloss, moisture and translucency, "G Bright Genius" lists the following three points.
"Glucosylated stable vitamin C derivative" to prevent spots and freckles
It contains "glucosylated stable vitamin C derivative*3," which acts on the melanin production process to prevent spots and freckles. This aims to lead to moisturized, clear-looking skin with a bright impression.
Two shiratama approaches to bring out skin translucency
It contains the moisturizing translucency-care ingredient "glutathione*4" and "G Circulate CPX*5," which circulates moisture through every corner of the stratum corneum.
With the two shiratama approaches of "giving" and "circulating," it aims to refine skin texture and bring out outstanding translucency. It is said to condition even dry-prone mature skin to be moist and glossy like shiratama.
*5: Glyceryl glucoside, glycogen, hydrolyzed rice leaf extract, glycerin (moisturizing)
An emulsion-based formula with carefully selected moisturizing ingredients
For skin that lacks moisture and is concerned about dryness-related dullness, the moisture ingredients*6 "histidine" and "hydrolyzed collagen" penetrate deep into the stratum corneum.
With a mellow emulsion base that melts into the skin, it fills every corner of the stratum corneum with moisture and supports firm, glossy skin.
*6: Histidine, hydrolyzed collagen, glycerin (moisturizing)
Product overview and launch commemorative campaign
Details of the medicated whitening*1 serum "G Bright Genius," going on sale on Wednesday, September 16, 2026, are as follows.
Product name: Fillnaturant G Bright Genius
Category: Quasi-drug
Formula: Fragrance-free, synthetic colorant-free, paraben-free, mineral oil-free, allergy tested (this does not mean that no one will have an allergic reaction.)
Volume: 30 mL
Price: ¥6,160 (tax included)
Release date: Wednesday, September 16, 2026
Where to buy: KOSE cosmetics counters in AEON stores nationwide, cosmetics specialty stores, drugstores and others (some stores do not carry it.)
Mail order: Dr.Phil Cosmetics official online store (Maison KOSE, Rakuten, Amazon)
How to use: Morning and night, after toner, take the amount from two pumps and gently work it into the skin.
Precautions for use: The contents may turn slightly yellowish, but this does not affect quality. After use, close the cap tightly and do not store in hot places or places exposed to sunlight.
Launch commemorative campaign
From Wednesday, September 16, 2026, a launch commemorative campaign will be held at participating stores nationwide and on the official online store.
Campaign 1: Buy one "G Bright Genius" and get a 7 mL sample (about one week's supply) as a gift (limited quantity).
Campaign 2: Buy two "G Bright Genius" and get one full-size product as a gift (limited quantity, up to two sets per person).
Related links
About the 'IC.U' brand
'IC.U' is a doctor's cosmetics brand that brings together the knowledge of skin specialists and KOSE's research and development capabilities.
With a beauty-therapy approach, it takes on the full potential of skincare to address skin concerns that become more diverse and serious with age.
Using cutting-edge dermatological technology and a highly satisfying feel in use, it offers high-performance items that lead to youthful skin with firmness, gloss and translucency. Since its birth in 2015, the lineup has comprised five product types in five varieties: spot-treatment serum, toner, serum, cream and spot-treatment serum mask.
*2: Care suited to one's age
