DoctorOz: How Kojic Acid Reduces Brown Spots and Other Skin Discolorations

DoctorOz
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9 Video Views·Sep 20, 2026
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Video Summary
AI GeneratedThis video discusses the use of specific over-the-counter acids to treat common aging skin concerns. Dr. Morimer explains how kojic acid targets hyperpigmentation and brown spots by inhibiting melanin, while lactic acid addresses dryness through gentle exfoliation and hydration. The segment provides practical advice on concentrations and application methods for safe home use.
So what skin issues are occurring to you as you age?
As I've gotten older, I have brown spots,
I have discoloration in my skin.
I've considered actually a couple of these spots,
having a laser.
So the anti-aging acid here is called kojic acid.
This is something that most people have not heard of.
So kojic acid actually works
by preventing the production of melanin.
So it can come in soaps, that's kind of a new thing out now.
So kojic acid in soaps, and also it can come in creams
and other lotions.
Yeah, okay.
Give me a little demonstration for you and everybody
to understand how this works.
So melanin is created, as that woman was saying,
if you're exposed to the sun.
So you can put a little here.
Go ahead, expose yourself to some melanin,
because you've been doing it anyway.
Oh yes, I have, out on the tennis courts daily.
And that puts you in one more spot.
So what ends up happening is these pigmented areas
are there trying to protect you.
So what you want to try to do is apply an acid,
kojic acid would do this.
Here, you apply a little bit and I'll apply a little bit.
And when you apply it the right way,
it'll actually reduce the production of melanin
that's being created.
And by reducing it, you won't obviously get darker,
but maybe even soak up.
I'll put it right here.
Go on, soak it in there.
I'll put it on mine, same kind of thing.
And you see how it quickly blushes them out?
That's the concept.
Now, it's not that fast, obviously.
But the hope would be that over time,
this is exactly kind of the result that you're getting.
So Dr. Morimer, how long until you really would see
a result like this?
So pigment comes in different layers of the skin.
The superficial pigment will go away fastest.
So you might even see improvement after one week.
What do you look for when you're buying the kojic acid?
What's the right concentration?
Kojic acid is different from other acids.
You want to have just a little amount, less than 4%.
All right.
Thank you.
Benita is here.
She argues she's actually getting dry skin as she ages.
So Dr. Morimer, why is it specifically lactic acid
you recommend for dry skin?
So you know lactic acid,
it sounds like it comes from milk, right?
It doesn't.
It comes from fermenting fruits and also bacteria.
Lactic acid does that sloughing off,
exfoliation that Dr. Oz mentioned,
but it also calms the skin.
So this you want to do, especially around the eyes.
Any acid around the eye, you want to be very careful
that you don't get it in the eye.
So one good trick is to put a little petroleum jelly
right on the crease so none of the acid will pool there.
And then you use a little sponge
so that it doesn't kind of get all over the place.
And do you mind if I put a little on?
Okay, so you're going to just start gently
and then just a little bit goes a really long way.
And then you're just going to come down
and around the eyes just a little bit here.
And what do you look for when you're buying it?
So the lactic acid does come in different strengths as well.
You really want to look for the vehicle.
You want it to be in a cream and a lotion.
I wouldn't go for a gel
because that can be alcohol-based and drying.
So really you're thinking about the lotion or cream
and you want it to be less than 10%, maybe 12% max.
This is over-the-counter.
It's over-the-counter.
In generics, very, very easy to do.
All these are over-the-counter.
We want you to know about these
because they're inexpensive
and if we're certified dermatologists,
they're great for you.
And we prescribe them to our own patients and herself.
And to me, you actually know about it.
