Ritsubi & Medicarland Co., Ltd., a company based in Koto-ku, Tokyo, specializing in the wholesale, planning, development, and import of cosmetics and beauty devices, will launch a new penetrating pure vitamin C serum, "VC SERUM DR 34," under its professional medical beauty brand Dr.MESOCEUTICAL® starting June 22, 2026 (Mon). VC SERUM DR 34 is the result of 15 years of research and development, built upon extensive experience and proprietary technology. This serum delivers pure, stabilized vitamin C without vitamin C derivatives, offering comprehensive care for mature skin. Official VC SERUM DR 34 website: https://www.ritsubi.co.jp/product/vc-serum-34-dr/ *1 Up to the stratum corneum *2 Stabilizing agent in the product [Development Background] As interest in aesthetic medicine grows, so does consumer demand for professional-grade skincare at home. Vitamin C, in particular, is widely recognized by aesthetic medical professionals as a key ingredient supporting post-treatment care and daily anti-aging*3 routines. However, some users remain concerned about issues such as skin irritation or dryness when using vitamin C products. Developed exclusively for aesthetic medical institutions, VC SERUM DR 34 prioritizes both concentration and purity, achieving a high-concentration formula that is gentle and minimizes irritation. Suitable for both first-time users and existing vitamin C enthusiasts, this serum can be incorporated into daily skincare routines. *3 Age-appropriate skincare [Product Overview] Product name: VC SERUM DR 34 Volume: 12mL Price: ¥22,000 (tax included) Release date: June 22, 2026 (Mon) [Key Features of VC SERUM DR 34] ◆ 34% Pure Vitamin C Serum Dr.MESOCEUTICAL® is the first to successfully formulate a 34% concentration of pure vitamin C—over 99% purity—into a stable serum through years of dedicated research. Using proprietary penetration technology, this high-concentration pure vitamin C penetrates deep into the skin, refining skin texture, enhancing firmne