Huge fan of this Remedy Science neck-firming serum stick. It’s a retinal, which uses retinoic acid instead of pure retinol, so it’s gentler on the skin and in my opinion more effective. It comes in stick form for easy application and can be used on your face and body for crepey skin. I’ve been using it on my neck, chest, and hands since August and have definitely seen results. LTKBeauty LTKselfcare