First, you can wash the lower part with warm water, then wet the soap and rub it out with your palm, gently massage it on your face for dozens of seconds, and then wash it with water.
If you like rich foam, you might as well put the handmade soap into an umbrella-shaped foaming net and rub it, so that the foaming effect is more intensive!
Note: please close your eyes when washing your face, because soap is weakly alkaline and it will feel uncomfortable when entering your eyes; Please use toner/pure dew in time after washing your face, because no matter how moist the soap is, the freshly washed skin needs to be hydrated and moisturized in time, otherwise the water will evaporate quickly and make the skin dry.
I hope I can help you!