When I was a child, in the cold winter, adults will give children chapped face and hands coated with thick petroleum jelly to protect the skin, although the smell is not good, but the effect is also good. Now that life is better, we can buy a variety of carefully blended and certainly not cheap skin care products, this chemically refined and cheap skin care products have been forgotten. The history of Vaseline for skin care Vaseline was originally named “petroleumjelly”, where “petroleum” is oil and “jelly” is a jam-like gel. is a jam-like gel that is a by-product of the petroleum refining process. As early as 1859, Robert Chesebrough, an American pharmacist and chemist, discovered the usefulness of this gel for skin repair and isolated and purified the white gel, naming it “Vaseline”, and in 1870 he patented it and founded the company. The company was founded. In the early days, Vaseline did not sell well, so Chesenberg himself hauled Vaseline around the streets and sold it, and he even performed the “hard work” himself, cutting his skin with a knife, then applying Vaseline and showing the onlookers how the wound had healed a few days earlier. This method of propaganda was effective, and Vaseline soon became popular throughout the United States. Petroleum jelly is a safe and effective skin protectant. Petroleum jelly was once considered unsafe because it was extracted from petroleum, but now with the development of chemical technology and newer purification techniques, the optimal grade of petroleum jelly is super safe. In our national standards, petroleum jelly is divided into: pharmaceutical grade petroleum jelly, industrial grade petroleum jelly, ordinary petroleum jelly and capacitor petroleum jelly. Pharmaceutical grade petroleum jelly has the highest purity, and the best pharmaceutical grade white petroleum jelly is used in cosmetics. Vaseline is a mixture of a group of chemical components that are alkanes, very stable chemically, with good antioxidant properties and light stability. 100% pure petroleum jelly has no moisture in it and is therefore not susceptible to spoilage and bacterial growth. Also, due to its chemical inertness, Vaseline is not absorbed into the skin and is not irritating, while it effectively insulates the skin from air and bacteria, and of course 99% of the moisture in the skin does not escape. The purpose of using a moisturizer is to “lock” the moisture in the skin, so a good moisturizer must have a sealing agent that has a closing effect, and petroleum jelly is the best sealing agent that can “lock” 99% of the moisture. Vaseline is the best encapsulant that can “lock” 99% of the moisture and can also be useful in some special situations. For example, when the face is repeatedly allergic, the skin barrier is continuously damaged, the need to use moisturizers to help repair the barrier, but at this time some patients instantly use the mildest medical moisturizer will feel the stinging, burning sensation, this is because the skin barrier is seriously damaged, the skin is highly sensitive, any ingredients in moisturizers will irritate the skin. In contrast, 100% pure petroleum jelly cream is virtually non-irritating to the skin, and its greasy and closed nature also blocks out external irritants completely, allowing the skin barrier to repair itself slowly. There are also special parts of the body where eczema does not heal repeatedly, because these special parts of the skin are always subject to constant stimulation of various kinds and can easily become chronic eczema, such as the lips and perioral area, which are stimulated by various kinds of food every day; women’s nipples and areolas, which are always subject to the test of friction; men’s scrotum and women’s vulva, which do not see the sun all year round and are constantly stimulated by humidity and sweating; hands, needless to say, create a beautiful The world, but at the expense of the health of the skin on the hands. Therefore, Vaseline can be used to moisturize and protect the following specific areas of eczema Lip and perioral dermatitis: apply before eating, before drinking, before brushing teeth, to protect the lips and perioral skin from irritation; nipple areola eczema, vulvar scrotum eczema: apply several times a day to maintain continuous local lubrication and reduce friction between and clothing; hand eczema: best to apply after each hand washing, if applied after daily life or work inconvenience, you can soak your hands in warm water for 3-5 minutes at night before bedtime, in Hand skin wet state thick layer of Vaseline cream, and then wear a layer of thin cotton gloves to bed; Infant diaper dermatitis: daily diaper changes in the skin prone to redness and friction parts at any time to apply Vaseline cream to reduce the stimulation of urine and diaper friction.