Total Fatty Matter (TFM) is a measure of the quality of soaps, indicating the amount of fatty material present in the soap. A higher TFM value implies that the soap is more hydrating and less harmful to the skin, as it does not cause dryness and has good cleansing and nourishing properties
. On the other hand, a lower TFM value means that the soap is less hydrating and can be damaging to the skin, leading to dryness and sensitivity
. In the case of Lux soap, it has a TFM value of 70.10%, which falls under Grade 2 soaps that must have a minimum TFM content of 70% according to the Bureau of Indian Standards (BIS)
. Therefore, the TFM value of Lux soap is considered good, indicating a decent quality and moisturizing properties
