skin

fair/pale skin 

 dark/olive skin  

dark-skinned/fair-skinned  

dry/oily/sensitive skin  

smooth/soft skin 

leathery skin =thick and hard skin   

scaly skin =rough dry skin on animals such as LIZARDs

 good/bad skin (=healthy or unhealthy skin on your face) skin colour/tone  

rub/irritate your skin 

 flap/fold/layer of skin