The neck betrays a woman’s age if left to its own devices. Here is a cream that is cheap, unlike the creams you can buy with the resounding names. Try it, you have nothing to lose.
Put the cocoa butter in a little pot and heat it up slowly over a very low flame. When the cocoa has melted, take if off the fire and add the olive oil. Keep stirring the mixture until it cools down. Put it in a little glass jar and keep it in the fridge. Use it as often as you wish.