Ingredients such as petrolatum or mineral oil keep water from evaporating, hence locking in moisture. A serum does not contain such occlusive or airtight ingredients commonly found in moisturizers.
Serums also contain a lesser amount of lubricating and thickening agents, as most of them are water-based. This helps them get absorbed more easily and makes them a great choice for those looking for a lightweight skincare product.
How do serums work?
Moisturizers contain bigger molecules that form a barrier on the skin surface. This tends to lock active ingredients out. Serums, on the other hand, are made up of smaller molecules which makes them fast and easy to absorb. The ingredients penetrate deep within the skin and restore skin health.
In order to ensure that you are purchasing the best beauty product, you should look out for the following ingredients in a face serum.
Antioxidants protect skin from damaging free radicals. Generated naturally by the body and found in UV radiation and cigarette smoke, free radicals can cause considerable skin deterioration.
Vitamins C, B and E, pomegranate extract, grape seed extract, green tea and resveratrol, can have potent antioxidant effects, helping restore your skin’s youthfulness.
Hydrators add moisture to your skin, instead of sealing it like moisturizers do. Hydrators such as ceramides and amino acids can help build strong cell membranes and strengthen the skin’s barrier. These ingredients would help prevent your skin from dryness and fine lines.
• Cell-communicating ingredients
Cell-communicating ingredients like retinol and niacinamide have the ability to regulate skin functions by using existing chemical pathways and receptors. These ingredients complement antioxidants to improve the function of skin cells. They can tell skin cells to behave like a healthy skin cell and can prevent cells causing skin damage from doing so.