Best body moisturizer for normal skin

Why it works

Ceramides and barrier lipids (ceramides, cholesterol, fatty acids)

Ceramides are waxy fats found between the cells of the skin's outer layer, where they work with other lipids such as cholesterol and fatty acids to keep the barrier intact and hold water in. Moisturizers add ceramides to help top up a damaged or dry barrier. In a double-blind 12-week study of people using a strong prescription acne gel, adding a ceramide cleanser and lotion reduced water loss and dryness compared with a basic cleanser. Most studies test whole products, so it is hard to separate the effect of the ceramides from the rest of the formula. The evidence is supportive but limited.

Hyaluronic acid and glycerin (humectants)

Humectants are moisturizer ingredients that draw water into the outer layer of skin and hold it there. Glycerin is regarded as the most effective humectant for hydrating the skin surface. Hyaluronic acid, a molecule the skin also makes naturally, is another humectant that dermatologists list for dry skin. Used on their own, humectants can pull water out of the skin into dry air and may even increase water loss, which is why well-made moisturizers pair them with occlusive ingredients that seal water in. They work best applied to damp skin after bathing.

Plant oils, butters and squalane (emollients)

Emollients are the oily part of a moisturizer. Plant oils, butters and squalane soften rough skin and leave a film that slows water loss. Evidence for individual oils is limited, mostly small human studies plus animal and lab work. A research review found sunflower seed and coconut oil supported the skin barrier in small studies, while olive oil, which is high in oleic acid, increased water loss. Dermatologists list jojoba oil and shea butter among useful dry-skin ingredients, but shea butter and squalane have little published barrier research. Heavy, occlusive products can aggravate acne and folliculitis, and any emollient can occasionally cause an allergic rash.