Amino Acid Skincare, a member of the M Mark series, has been renewed and will be launched on Monday, March 17, 2025. While maintaining the same eight moisturizing amino acid ingredients and glycerin-free formula, useful ingredients tailored to the purpose of use of the product have been added. It leads to clean, clear skin with a good moisture balance, whether the skin is dry due to lack of water retention or sticky due to excessive sebum.
Moist and Dry Moisturizing
Evolved Glycerin-free Lotion
In response to requests for a glycerin-free lotion for dry skin, we have commercialized "Amino Acid Moisturizing Water Oil-in" in this renewal product line. It contains squalane as an oil that prevents moisture from evaporating, and it does not have a sticky, oily feel. It balances moisture, moisturizing ingredients, and oil, which are the keys to moisture. The much-loved "Amino Acid Permeating Water" will of course continue to be sold. While maintaining the watery feel, the penetration of amino acids into the stratum corneum has been further enhanced. 
When used in combination with Amino Acid Penetrating Gel and Amino Acid Moisturizing Lotion, both of which are also glycerin-free, Amino Acid Penetrating Water can be used to moisturize dry skin while leaving oily skin lightly moisturized.
Dry/sensitive, oily/combination
Amino Acid Supplementation for Any Skin
40% of natural moisturizing factor (NMF), which keeps moisture in the stratum corneum and protects skin from drying out, is amino acids. However, when amino acids decrease due to dryness of the skin, the moisture retention function of the stratum corneum also decreases, causing skin problems. It is important to note that this can also lead to a further decrease in amino acids, and the M Mark series "Amino Acid Skin Care" contains 8 types of amino acids according to their composition in the stratum corneum, so that the skin can be continuously supplied with amino acids on a daily basis. 
Amino acid skincare is important for all skin types, whether dry, sensitive, oily or combination, and will be renewed in spring 2025.
March 1, 2025 (Sat) Loft pre-sale
March 3, 2025 (Mon) Matsuyama Yushi online store pre-sale
March 17, 2025 (Mon) General release
*Sales of the current product
Due to the renewal, sales of the current product will end on Friday, February 28 (orders will be accepted at the Matsuyama Yushi online store until 10:00 a.m. on March 3 [Monday]). However, we have received orders far in excess of our plan since the end of last year, and some products are expected to be sold out before February 28. Due to difficulties in procuring containers and other materials, we are unable to manufacture additional products and will discontinue sales as soon as our stock runs out. We sincerely apologize for any inconvenience this may cause to our regular customers. We appreciate your understanding in this matter.
