Skinbyrd review for 5% Alpha Lipoic Acid

This tiny, little dark bottle is a very powerful anti oxidant. My skin is very sensitive and I apply this using the sandwich method and man, I can still feel a little discomfort after that many layerings of hydrating products. It doesn't sting or burn but you definitely can tell that this serum is very potent once it comes in contact with your skin. Anyways, I'll go straight to the next morning : I woke up to a glowy skin. My face seems brighter. Even my husband noticed the difference. And my skin felt really good for the whole day. Since it can cause photo sensitivity, I did layer a thick sunscreen with continuous reapplication every 3 hours eventho its cloudy outside. Also, I need to mention that this serum should be used in PM routine only.