Of the 20 amino acids that make up proteins in the human body, 9 are considered essential, while the remaining are classified as nonessential. L-alanine is a nonessential amino acid that the human body can produce on its own. It is also one of the most abundant amino acids present in proteins. Alanine plays a vital role in muscle protein metabolism and is essential for nitrogen balance in the body. Intake of up to 4.5 g/day of L-alanine through dietary supplements is considered unlikely to cause harmful health effects.
In skincare, alanine helps maintain the skin’s moisture balance, enhancing overall hydration. Because of this, it is commonly included in cosmetic and moisturizing products like foundations, lotions, creams, and serums. Additionally, L-alanine is used in shampoos and hair care products for its moisturizing and conditioning effects. It supports hair nourishment and strength, helping to improve overall hair health and enhance its appearance, resulting in smoother, more vibrant, and healthier-looking hair.
