Physiological saline is widely used in daily life such as oral hygiene, wound cleaning, and many people even use it to disinfect the throat area. Therefore, many people are wondering whether physiological saline can be used to wash the face or not?

Cysteine ​​is a semi-essential amino acid that the body can produce from other amino acids, namely methionine and serine. Cysteine ​​is found in most protein-rich foods, such as chicken, yogurt, cheese, eggs, sunflower seeds, and legumes.