What Is Sebum?


For many people, sebum is a bit of a dirty word. But it shouldn’t be like that. Sebum is simply the skin’s natural moisturizer. It’s only when your skin produces too little or too much of it that problems arise. In the first case, skin becomes dry; in the second shiny and prone to breakouts. But in the right amount, it’s very beneficial to the skin. Here’s why:

What is sebum, exactly?

Sebum is a mixture of fatty acids, wax esters, glycerides, cholesterol and squalene (this is why these ingredients are often found in skincare products) that’s produced by sebaceous glands. Sebaceous glands are present all over the body (except the palms of the hands and soles of the feet), but are more numerous in the forehead, chin and middle portion of the back, which is why these areas are more prone to acne. Sebum production is regulated by hormones and decreases with age. That’s why acne is most common in teenagers, while many older women suffer from dry skin.

What is sebum good for skin?

Sebum mixes with sweat, forming a protective layer called the acid mantle. The acid mantle prevents moisture loss, thus keeping skin soft and moisturized. In addition, this layer also protects skin from external agents, such as the wind or pollutants, that may harm it, and inhibits the growth of bacteria and fungi, thus preventing infections. See how useful it is?

When sebum doesn’t work well

Sebum may be good for the skin, but too little or too much of it, isn’t. When skin doesn’t produce enough, it becomes dry and flaky. Damage to the acid mantle (which can be due, among other things, to harsh cleansing agents and environmental conditions) can also cause dryness, as well as leaving skin prone to infections. When this happens, you need to apply a moisturizer with skin-identical ingredients (such as fatty acids and glycerides) that can repair this protective barrier.

On the other hand, when too much sebum is produced, it will give skin a shiny appearance and clog the pores, which can lead to breakouts. To prevent it, you should keep the pores clean by exfoliating them with Salicylic Acid (this ingredient can penetrate inside the pores and remove all the gunk that has accumulated inside them). You should also consider using retinoids, which can help keep sebum production under control.

I hope this has helped you realise how important sebum really is for our skin. 😉

Did you consider sebum a dirty word too?

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    • beautifulwithbrains says

      Eli, yes, they can cause sun sensitive. Because of that, dermatologists recommend to use them at night. That way, that won’t be a problem. :)

  1. Janessa says

    I didn’t know THIS much about sebum! 😀 I’m always learning from you! <3

    Sorry I've been really busy.

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