the undereye area has always been a struggle for me, and for many of us, when it comes to concealer... due to the dreaded creasing.
this tip isnt neccesarily groundbreaking but ive been very surprised how many people arent aware of it!
you NEED to make sure your undereye area is moisturised. a dry undereye makes for lotsss of creases when applying concealer. Moisturise, moisturise, moistureise. ideally use a hydrating eye serum then a moisturiser. Once youve done this, leave it for a few minutes to let it soak in and work its magic. then apply your concealer, leave for a further minute or two and watch it blend like a dream!