Xanthelasma is the term for hard yellow patches around both upper and lower eyelids. Sometimes but not always it is representative of raised fats in your blood.

At Faciem Dermatology London, Dr Prasad will confirm diagnosis and will offer your serial TCA chemical peels to the areas, usually every 4-6 apart which slowly but surely chemical peels away the area the area , the area usually scabs and then crusts then reveals normal skin.

https://www.dermnetnz.org/topics/xanthoma

Treatment: TCA

pic 31-min