Instructions: In this task, you need to Translate Czech text to English.
Input: Podstatou e en je zji t n , e amid hydromastn kyseliny v kombinaci s retinolem nebo retinylovm esterem p sob synergickou inhibici diferenciace keratinocyt . Kosmetick inky retinolu nebo retinylovch ester v kombinaci s amidy hydroxymastnch kyselin byly analogick s p soben m kyseliny retinov .Output:
It is found that hydromastic acid amide in combination with retinol or retinyl ester is synergistic in inhibiting keratinocyte differentiation. Retinol or retinyl ester cosmetics in combination with hydroxy fatty acid amides were analogous to those of retinoic acid.