Glycerin

Glycerin, also known as glycerol or glycerine, is a type of carbohydrate called a sugar alcohol or polyol[1]. It is a colorless, odorless, viscous liquid that is sweet-tasting and non-toxic[2]. Glycerin is found naturally in fermented foods and beverages, such as beer, honey, vinegar, wine, and wine vinegar, and is also commercially produced from fats and oils or through the fermentation of yeast, sugar, or starch[1].

Glycerin is used in a variety of food and drink products to help retain moisture, prevent sugar crystallization, and add bulk, smoothness, softness, sweetness, and texture[1]. It is also used in medical, pharmaceutical, and personal care preparations to improve smoothness, provide lubrication, and as a humectant[2]. In addition, glycerin is used in the food industry as a humectant, solvent, and sweetener, and may help preserve foods[2].

Glycerin is classified by the FDA among the sugar alcohols as a caloric macronutrient[2]. It is more calorie-dense than other sugar alcohols and contains more calories per gram (4.32) than sugar (3.87)[1]. However, glycerin does not significantly promote insulin secretion when consumed[1].

Glycerin's safety has been reviewed and confirmed for use in food by health authorities around the world, including the World Health Organization, the European Union, and countries such as Australia, Canada, and Japan[1]. The U.S. Food and Drug Administration (FDA) has also declared glycerin safe for consumption[1].

In terms of its effects on the skin, glycerin can help moisturize and protect the skin, but it may dehydrate and cause blistering, especially if undiluted[5]. It is recommended to use glycerin-containing products like soaps or lotions, and to stop if irritation occurs[5]. Glycerin can also be used in its pure form, but consumers need to be aware of the potential risks and benefits[5].

In summary, glycerin is a versatile and widely used ingredient with various applications in food, pharmaceuticals, and personal care products. It is a natural humectant that can positively affect the skin, but its use should be done with caution to avoid potential side effects.

Citations:

[1] https://foodinsight.org/what-is-glycerin/

[2] https://en.wikipedia.org/wiki/Glycerol

[3] https://www.amazon.com/Vegetable-Glycerine-Glycerin-Natural-Cosmetic/dp/B06XXHXRND

[4] https://www.amazon.com/Vegetable-Glycerine-Glycerin-Natural-Cosmetic/dp/B01N9PZO9F

[5] https://www.healthline.com/health/glycerin-for-face