What is a skin serum?

What is a skin serum?

There are many questions sorrounding serums,but what is a skin serum?. If they are oils, if they work, if they are only marketing, when to use them, how to use them, and what types of skin should or shouldn’t use skin serum.

In this post, I’m going to explain what is a skin serum. I’m going to mention the myths that revolve around facial serums, I’m also going to address both its benefits and its disadvantages, and the types of serums there are as well as how to use them.

What is a skin serum?

Skin serum is a fluid with a thick liquid composition making it easy for the skin to absorb. This product can also come in the shape of a water-based or oil-based substance. It is a skin product with many benefits and different beneficial ingredients, depending on the type of serum you might choose as well as the purpose you might have.

Many myths are surrounding facial serums.

  • Skin serums are not suited for oily skin: FALSE. Most of the facial serums are water-based and there are some targeted specifically towards oily skin and will help those types of skin.
  • Skin serums are pure marketing and your moisturizer is enough: FALSE. While using a moisturizer is a must and you might be hable to live without a serum. Skin serums work wonders for the skin and have many benefits that moisturizers won’t provide you.
  • Facial serums are expensive: TRUE? kind of, skin serums are pricey, yes, but the benefits it has are many, also, in some cases, it may seem more pricey than it is in reality. While some serums come in small sizes, they are meant to be used in drops so they actually last for a long time; your make up might even finish before, and because of all the benefits, in the long term, you might even need less makeup because your skin will look amazing.

How to use facial serums.

Serums are a leave-on product, depending on the ingredients your serum might have, you can either use it in the mornings and/or at night, although if you used it only once a day, I recommend you to use it at night.

Because skin serums are made to be left on, by rule, it should be used after cleansing the face. One, because you don’t want to put any product on dirty skin and two because even if serums are of rapid absorption, you don’t want to wash it off. If you use toners and/or micellar water, then you should apply them before the serum as they are even more liquid, although it doesn’t affect as much the result, which takes us to the moisturizer.

The moisturizer should be used after the serum, not only because of its texture but also because skin serums lack petrolatum and mineral oils found in moisturizers, which prevent the evaporation of water. If you want to know more about the subject you can read the post on What is skin hydration, where you can learn about how to maintain the skin hydrated.

Benefits and disadvantages of skin serum

  • Active ingredients: Skin serums are packed with active ingredients. They have many types of ingredients and variations depending on the type of serum it is. The good part is, that most of the fluid in serums is eliminated, and you are left with all those amazing active ingredients.
  • Serums don’t contain thickeners: I mentioned before that serums don’t contain petrolatum nor mineral oils, but have I mentioned it doesn’t contain thickeners?. Thickeners are good because they help to retain the water on the skin so it remains moisturized, the downside? It keeps active ingredients out, and it’s where serums come to play and why you should put it before your moisturizer. Serums will add those active ingredients into the skin. The catch here is that active ingredients are more expensive than thickeners and it is why skin serums are so expensive.
  • You only need a drop: Yes, Serums are indeed expensive, but you only need to use a drop. Because of its texture, using one drop should be enough in spreading to the whole face. Its packaging is actually designed to use it that way, which is why it’s usually packaged in a small bottle with a dropper.
  • Anti-aging: In the next section, we’ll talk more about those with the sole purpose of anti-aging. But even those serums that have other purposes, are packed with antioxidants and are perfect to fight signs of aging after all anti-aging is a staple for serums.
  • Sensitive skin: Because of the rapid absorption, it can be a bit aggressive for people with sensitive skin and shouldn’t put the serum right after. For people with skin conditions, it can even be more damaging than beneficial and should consult a dermatologist before putting any ingredient in your face.

Serum for different purposes

  • Hydration: Even if Serums don’t retain the water, they have components that introduce hydration into the skin, the ingredient most used for this purpose, is hyaluronic acid. If you want to know more about hydrating products including hyaluronic acid click here.
  • Oily skin: there are different reasons why the skin might be oily and one of those surprisingly is that the skin is not hydrated. Either way, if your skin is oily you might still be skeptical about certain ingredients on your skin. Luckily most serums are water-based and not oily at all, and better yet, serums that target oily skin, will help to reduce the oils and contain ingredients specific for oily skin and that will reduce the pores (clean them), such as niacinamide.
  • Sensitive skin: As I mentioned, some serums might be a bit aggressive for sensitive skin, the good news is that there are serums that are made specifically for sensitive skin. Most of these types of serums contain Polypeptides and other components in charge of soothing the skin and calming the redness leaving you a glowing and smooth skin.
  • Anti-aging: If your goal is to look younger, search no more, a serum is a must. Not only have I mentioned it before, but now I put it here too, because serums are known for its anti-aging purposes, not even mention the ones with the sole purpose of making you look younger. Anti-aging serums are full of vitamins, antioxidants, ferments, extract, peptides, etc. the list goes on. You can even use them if you don’t have the objective of looking younger after all, those ingredients will make your skin look amazing, glowing, brighter, and smooth.


Now you know, facial serums are amazing. Choose a serum depending on your skin type and try it, you will love it. In future posts, I will write reviews about serums so it will be easier for you to choose one, as well as that I will write a post for alternatives if you don’t have the budget for a good facial serum. After all, not because the label says it’s a facial serum, it means it will make wonders. Of course, there are some affordable serums that I will review the latter, but there are some that are just not worth it.

If you have any questions comments or would like to know more about a subject, please write in the comment section down below. You can also follow Glowing Rush in social media and subscribe for more information (don’t worry there won’t be any spam).

Have an amazing week!

Sofia ☺️

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