Does using whitening cosmetics really make my skin whiter?
From niacinamide to glutathione, I asked a dermatologist directly. A comparison of 5 ingredients + morning/evening routines.
Editor Sua
K-DIA Beauty Editor · Dry Skin · Fighting Melasma for 5 Years
Does using whitening cosmetics really make your skin whiter?
Honestly, I was curious too, so I asked a dermatologist
3-line summary for busy people
1. Whitening is not about getting whiter, but melanin It’s putting on the brakes. 2. The principle varies depending on the ingredient. You have to choose one that suits your skin. 3. What if you don't wear sunscreen? It’s all useless. Seriously.
You think that using whitening cosmetics makes your skin whiter, right?
I thought so too. But it turns out that's not the case.
What whitening cosmetics do is not bleach the skin.
They put the brakes on the melanin that has been excessively produced due to UV rays,
"Stop making it!"
They restore the parts that have become darker than your natural skin tone back to their original state.
Things like "creams that whiten in 3 days"... are just glitter particles.
The process of melanin production (simple ver.)
1 When ultraviolet rays touch the skin
Most whitening ingredients work on the principle of blocking step 3
There are 8 whitening ingredients recognized by the Ministry of Food and Drug Safety,
Among them, I have compiled only the 5 that are really commonly used.
It is a Vitamin B3 derivative. It causes almost no irritation, so it is OK even for sensitive skin.
It is an all-purpose ingredient that provides whitening + pore care + sebum control.
Concentration of 2-5% is sufficient · Compatible with most ingredients
It is a verified ingredient with the most research papers.
However, it is very irritating and oxidizes easily. Please discard the serum if it turns brown.
Concentration 10-20% · Use in morning routine · Refrigerated storage recommended
If you think Vitamin C is too strong, use this.
It creates good synergy when used with Niacinamide.
Over 2% of α-arbutin · More stable than vitamin C
It is the first ingredient used when treating melasma at dermatology clinics.
It was originally a hemostatic agent, but a whitening effect was discovered. There is also an oral version.
Oral administration must be done after consulting a specialist
You've heard of the White Jade Injection, right? That's this.
The antioxidant effect is certain, but the evidence for the whitening effect is still insufficient.
It does look brighter after you get it, but if you stop, it goes back to how it was.
Sole use for whitening purposes is not recommended · OK as an antioxidant aid
Now that you know the ingredients, the order in which you apply them is important.
This is the routine I asked a dermatologist about directly.
MORNING
1 Face wash (mildly acidic cleanser)
2 Vitamin C Serum — Directly on bare skin!
3 Niacinamide Essence
4 Moisturizing Cream
5 Sunscreen SPF50+ ← Everything is meaningless without this
NIGHT
1 Oil cleanser → Foam cleanser (double cleansing)
2 Arbutin or Tranexamic Acid Serum
3 Niacinamide Essence
4 Ceramide Cream
5 2~3 times a week: AHA/BHA exfoliation
Do not do this
• Applying Vitamin C + Retinol simultaneously (Irritation bomb)
• Not applying sunscreen after applying whitening serum (Counterproductive)
• Saying "It's not working" after 2 weeks and switching to something else (At least 8 weeks!)
• Lemon juice self-whitening (Please do not do this. Risk of burns)
Q. Does using whitening cosmetics really make my skin whiter?
To be honest, it is impossible to become whiter than your natural skin tone. It only restores the areas darkened by UV rays or inflammation to their original tone. Anything beyond that is a procedure.
Q. How long does it take to see results?
Since skin turnover is about 28 days, you need to use it for at least 2 to 3 cycles (8 to 12 weeks) to feel the difference. It would be a waste to give up after using it for two weeks just because it doesn't work.
Q. Is sunscreen really that important?
It is no exaggeration to say that 80% of whitening is sunscreen. Even if you apply a 100,000 won serum, melanin will continue to be produced if you do not apply sunscreen. Even indoors.
Q. I'm thinking of getting a whitening injection...
It does have an antioxidant effect. However, the whitening effect is still scientifically insufficient. It does make you look a bit brighter if you get it, but it goes back if you stop. The cost-effectiveness... well.
Dry — Niacinamide + Arbutin. Start with hydration. If it is dry, turnover slows down, so pigment shedding also slows down.
Oily — Niacinamide is the best (Whitening + Sebum control one-stop). Adding AHA exfoliation twice a week is good.
Sensitive — The combination of arbutin + tranexamic acid is the safest. Vitamin C is a derivative (SAP), starting from low concentrations.
Concerns about melasma — Tranexamic acid is the answer. But honestly, there are limits to home care alone. Visit a dermatologist.
Curious about whitening treatments suitable for your skin?
Check out verified dermatology reviews on K-DIA
See dermatology reviewsI've really tried everything because of my melasma, too. The conclusion was sunscreen + tranexamic acid + patience. I was about to give up after a month because it didn't work, but after three months, it definitely changed. Don't give up, everyone!
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This content is for informational purposes only and does not replace medical treatment.
