In 2018, Muscle Research launched the only cleanser in the Essence Moisturizing series - Essence Cleanser, with a price of 120g at 149 yuan, changing the previous pricing strategy of less than 100 yuan. Unlike other facial cleansers that target students, this cleanser is officially defined as "the first cleanser developed for first-mature skin" and is more suitable for women of light maturity.
 
The soap-based formula of Glutinous Cleanser is composed of lauric acid and potassium hydroxide, and the filtrate of rice ferment products is added as a whitening agent. Its paste is thick and pure white, the foam is rich and solid, with the aroma of Japanese sake, but the cleansing power and irritation are stronger than the previous amino acid cleansers, and it is recommended to take a detour for dry and sensitive skin.
 
The Extreme Moisturizing Cleanser comes from the Extreme Moisturizer series, and it has also been the sales champion of Skinken for many years. This cleanser uses amino acids to combine amphoteric surfactants, which has good cleansing power, and adsorbent hyaluronic acid, which will still form a moisturizing film on the surface of the skin after washing, so that the stratum corneum of the skin covered by it will remain moisturized, but there will be no obvious film feeling on the skin. The disadvantage is that the cleansing foam is weak, and many oily skin users complain about "washing a fake face".
 
The Formula series is a product line specially created for sensitive skin, and its Formula Sensitive Repair Facial Cleanser is remarkable. The facial cleanser uses amino acids and betaine as the main surface activities, and inositol hexaphosphate plus biosaccharide gum-4 is formulated with moringa pterodium seed extract, which can effectively reduce the adhesion of pollutants, remove heavy metals from the surface of the skin and form a protective barrier. Alcohol, colours, fragrances, mineral oils and preservatives are not added to take care of the delicate and sensitive skin. When used, the foam is mild and gentle, easy to pass through water, and does not dry or slip after washing.
 
Jointly developed by Mentholatum and Rohto Pharmaceuticals in Japan, Muscle Research is known for its comprehensive range of products and low prices. In addition to the above cleansers, its cleansing series is an entry-level product, covering six cleansers, including a soothing and gentle cleanser, a deep cleansing acne cleanser, and a pore cleanser and oil control cleanser. The Egg Skin series is suitable for mature skin, and there are two products: Egg Skin Exfoliating Cleanser and Cleansing Foam. The Whitening Cleanser is a single cleanser that contains botanicals such as double hyaluronic acid and arbutin to help hydrate and brighten.