Yes, this is completely normal and safe. The whitish or crystallised layer sometimes seen on the surface is most likely due to the natural ingredients used in cold-processed soaps. These components can form harmless surface crystals when exposed to air, humidity, or temperature changes.
This does not affect the soap’s quality, safety, or performance in any way. It can be used as usual, or simply removed with a damp cloth or rinsed under water to remove the layer before use. This is, in fact, a sign of a truly natural, chemical-free soap, made without synthetic stabilizers, emulsifiers, or preservatives.