I have a sensitive/dry/irritated skin. Can you please recommend a good serum?

pls recommend a serum

I would like to add a retinol on my skin care routine. Can you recommend a product for sensitive skin? Also, what's the correct way to use it?

Thank you

retinol

Which do you recommend or has the quick results? 


Pyungkang Yul - ACNE Spot Cream
COSRX - AC Collection Ultimate Spot Cream

ACNE cream

How do I get rid this kind of concern on my cheeks. It only appears on the right side 

Currently using the products below

Thank you

Skin Bumps

Been using this product for straight three weeks since I received it. I&#39;m one of the lucky winners, btw. I want to use it first before I&#39;ll provide my feedback. It quickly absorb my skin, it&#39;s suitable for my dry and sensitive skin that it didn&#39;t have any reaction after applying it. My skin looks so glowing and healthy

unnier