Do you have sensitive skin? It can be difficult to know what skincare products and ingredients to use to help it (and what to avoid).
My general rule of thumb is to treat and prevent. Occlusive products (thicker petrolatum-based) are best used when the skin is still wet, to prevent water loss.
When the skin is dry, hydrating products are best (glycerin or water-based).
A diet rich in histidine can be helpful to build up the skin barrier. Sunflower seed oil is a great protectant in those who have atopic dermatitis as is virgin coconut oil for treatments of flares.