General:
* Dermatology: This is the medical specialty focused on the skin, hair, and nails.
* Cutaneous science: This term emphasizes the study of the skin itself.
* Skin biology: This highlights the biological aspects of skin function.
* Skin research: This emphasizes the scientific investigation of the skin.
More specific:
* Cosmeceutical science: This refers to the science of using cosmetics for therapeutic effects.
* Skin care science: This focuses on the scientific principles behind skincare products and practices.
* Dermatopathology: This is the study of skin diseases using microscopy.
The best word to use will depend on the specific context and what aspect of "skin science" you want to emphasize.