How do tough waxy cuticles on leaves prevent infection?

Because it's partially permeable membrane so it won't let anything get inside the leaf so by this cuticle the leaf is protected not to let any foreign substances in and preventing loss of water

Cuticular wax, is a complex mixture of very long-chain fatty acids (C20-C40) and ... Here we will focus on the function of the plant cuticle in relation to the ... While it is difficult to determine the nature and concentration of cutin ... Antilipase antibodies prevent infection of tomato leaves by Botrytis cinerea.