---
title: "Myth vs. Fact | School of Dermatology"
url: https://schoolofdermatology.com/myth-vs-fact
description: "Evidence-based answers to the most common skincare myths. Find out what's true, what's false, and what the science actually says."
lang: en
---

Evidence-Based

# Myth vs. Fact

Skincare is full of misinformation. We break down the most common claims and tell you what the science actually says.

PARTIALLY TRUE

## Drinking More Water Hydrates Your Skin

Staying hydrated helps, but it's not the skin solution you think.
https://schoolofdermatology.com/myth-vs-fact/drinking-water-hydrates-skin

MYTH

## Oily Skin Doesn't Need Moisturizer

Skipping moisturizer might be making your oily skin worse.
https://schoolofdermatology.com/myth-vs-fact/oily-skin-doesnt-need-moisturizer

MYTH

## Pores Open and Close With Hot and Cold Water

Your pores don't have muscles — here's what really happens.
https://schoolofdermatology.com/myth-vs-fact/pores-open-and-close

MYTH

## You Only Need SPF on Sunny Days

UVA rays don't care about clouds — and neither should you.
https://schoolofdermatology.com/myth-vs-fact/spf-only-on-sunny-days

PARTIALLY TRUE

## Greasy Food Causes Acne

It's not the grease — but your diet does play a role.
https://schoolofdermatology.com/myth-vs-fact/greasy-food-causes-acne

MYTH

## Natural Ingredients Are Always Safer Than Synthetic Ones

Poison ivy is natural too — here's why 'natural' means nothing for safety.
https://schoolofdermatology.com/myth-vs-fact/natural-vs-synthetic-ingredients

MYTH

## You Need to Feel a Tingle for a Product to Be Working

That burning feeling isn't a sign of progress — it's irritation.
https://schoolofdermatology.com/myth-vs-fact/tingle-means-working

MYTH

## Toothpaste Helps Dry Out Pimples

Put down the Colgate — there are much better options.
https://schoolofdermatology.com/myth-vs-fact/toothpaste-on-pimples

MYTH

## Blackheads Are Caused by Dirty Skin

They're not dirt — they're oxidized sebum. And scrubbing makes it worse.
https://schoolofdermatology.com/myth-vs-fact/blackheads-caused-by-dirty-skin

MYTH

## Expensive Skincare Always Works Better

Price tags don't equal results — here's what actually matters.
https://schoolofdermatology.com/myth-vs-fact/expensive-skincare-works-better

MYTH

## You Stop Needing Sunscreen Indoors

UVA rays go right through your windows — yes, even at your desk.
https://schoolofdermatology.com/myth-vs-fact/sunscreen-indoors

MYTH

## You Need to Match Your Skincare to Your Age

Your skin type matters more than the number of candles on your cake.
https://schoolofdermatology.com/myth-vs-fact/match-skincare-to-age

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