What lotion is best for your skin. How does lotion really work. What ingredents make your skin really soft…?

I need some answers for a science project i am doing with my partner and we are having a little bit of trouble figuring out what makes your sking soft and how it works.
If you think that you have an anser type it up. Don’t be shy.

Lanolin
Quick Facts on Lanolin

Lanolin is secreted from a sheep’s sebaceous glands and acts as a waterproofer to protect the sheep’s wool from the elements
It is made up of a mixture of wax, fatty acids and alcohols
Crude lanolin constitutes approximately 5-25% of the weight of freshly shorn wool
The wool from one Merino sheep will produce about 250-300ml of recoverable wool grease (lanolin)
Lanolin is extracted from wool via a scouring process. This process involves washing the wool in hot water with a special wool scouring detergent to remove dirt, wool grease (crude lanolin), suint (sweat salts), and anything else stuck to the wool. The wool grease is continuously removed during this washing process by centrifugal separators, which concentrate the wool grease into a wax-like substance melting at approximately 38°C.
Lanolin is also found in lip balm/chapstick to help heal wounded lips from chapping.
Those with sensitive skin or eczema can react to lanolin.

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