No, it's generally not recommended to use soap immediately after applying Multani Mitti.
Why Avoid Soap After Multani Mitti?
Multani Mitti, also known as Fuller's Earth, is a natural clay mask that deeply cleanses the skin by absorbing excess oil and dirt. Using soap afterward can counteract these benefits. As noted in one source, "Using soap again will make your skin excessively dry. It can cause breakouts as well." [Source: Apr 28, 2018 article]. Another source explains that using a face wash (or soap) after Multani Mitti would make the "entire skin benefits from the mask, go in vain." [Source: Quora, Jan 17, 2018]. The drying effect of soap can also lead to redness and irritation, as reported by users on Reddit [Source: Reddit, Oct 6, 2022 and Nov 20, 2023]. Even if you have oily skin, the natural cleansing properties of Multani Mitti often eliminate the need for soap immediately following its use. [Source: Quora, Dec 27, 2018]. A more recent source agrees, stating "It's not recommended to use soap immediately after using Multani Mitti as it can further dry out the skin." [Source: Ayuvya, Jul 18, 2024]
Alternatives After Multani Mitti
Instead of soap, consider rinsing your face thoroughly with plain water after removing the Multani Mitti mask. You can then follow up with a gentle moisturizer to maintain skin hydration.