Does Toothpaste Help with Acne? Why You Should Never Use It

We have all been there: you wake up with a massive, angry pimple right before a big event. Desperate times call for desperate measures, and the oldest "trick" in the book is to dab a bit of toothpaste on it before bed. But does toothpaste help with acne, or is this DIY hack secretly destroying your skin?

Why People Think It Works

The rumor that toothpaste cures acne didn't come out of nowhere. Many toothpastes contain drying ingredients like baking soda, hydrogen peroxide, and alcohol. Historically, some toothpastes even contained triclosan, an antibacterial agent (though it has since been banned in many countries for use in soap and cosmetics). Because these ingredients are incredibly drying, applying them to a pimple will dry out the surface pus.

However, drying out a pimple is not the same as healing it.

The Danger: Chemical Burns and Irritation

Toothpaste is formulated for teeth, which are the hardest substance in the human body. It is not formulated for the delicate, slightly acidic barrier of your facial skin.

• Severe pH Disruption: Toothpaste is highly alkaline (basic). Your skin naturally has an acidic mantle (around pH 5.5) to keep bacteria out. Applying toothpaste obliterates this acid mantle, making that patch of skin highly susceptible to more bacterial acne.
• Chemical Burns: Ingredients like sodium lauryl sulfate (SLS), peppermint oil, and heavy flavorings are extremely harsh. Leaving them on the skin overnight frequently causes contact dermatitis, resulting in a red, peeling, weeping burn that is much harder to conceal than the original pimple.
• Worsening Dark Spots: Because toothpaste causes such severe inflammation, it dramatically increases the risk of Post-Inflammatory Hyperpigmentation (PIH). The pimple might shrink, but it will leave behind a dark brown or red scar that takes months to fade.

What to Use Instead

If you need to shrink a pimple overnight, skip the crest and reach for actual dermatological spot treatments:

• Hydrocolloid Patches: These act as a vacuum, physically sucking the pus out of the pore while keeping the area hydrated and protected from picking.
• Benzoyl Peroxide Spot Treatment (2.5%): This delivers oxygen directly into the pore to instantly kill the acne-causing bacteria without burning the surrounding skin.

Summary

Does toothpaste help with acne? Absolutely not. While it might dry out the surface of a pimple, the severe irritation, disrupted pH, and risk of chemical burns make it one of the worst things you can put on your face. Keep the toothpaste on your teeth, and use hydrocolloid patches for your skin.

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