[What is hyaluronic acid?] 】 Hyaluronic acid is a component that originally exists in the body with excellent water retention, and 1 g of hyaluronic acid can hold 6 liters of water. Hyaluronic acid decreases steadily around the age of 40. Mitsuki hyaluronic acid stock solution is a beauty solution created by the fermentation process of lactic acid bacteria. Hyaluronic acid, which is produced in the process of fermenting lactic acid bacteria, is packaged as it is without any mixture. (Since it contains moisture, it is embalmed) [10 additive-free] No additives (surfactants, fragrances, former designated ingredients, mineral oils, emulsifiers, ultraviolet absorbers, parabens, silicones, colorants, tar-based dyes) Depending on the season, temperature, humidity, and physical condition, the condition of your skin changes rapidly. In order to make it easy to use even when your skin is sensitive, we are particular about additive-free as much as possible. * It does not mean that skin irritation does not occur in all people. [Various ways to use] 1. As a serum Like a normal serum, you can use it as it is after lotion and undiluted serum. 2. Add a few drops to lotion You can add a few drops to your usual lotion and use it. 3. To the iontophoresis machine It can also be used as a serum for iontophoresis. 4. Plus for face wash and shampoo It is also possible to add a few drops to facial cleansing foam or shampoo. [Domestic production] We have set a reasonable price without unnecessary costs on containers and advertisements so that you can continue without difficulty. ・ No extra cost for packaging ・We will not engage in excessive advertising. [pH PH value is 6~7] It is produced at a factory in Japan that fully meets GQP (Quality Assurance Standards) and GVP (Safety Management Standards). The pH value is 6~7 (neutral with weak acidity) for quality control.