Cornstarch and Milk of Magnesia: A Gentle DIY Skincare Mask
Using cornstarch and milk of magnesia is a popular choice in home remedies thanks to their mild, multi-purpose nature. Still, it’s essential to remember that these ingredients are not medical treatments and should never replace professional care. When used occasionally, they may be helpful for certain cosmetic or wellness purposes.
Below you’ll find a simple way to prepare this DIY mask and the potential benefits it may offer.
What Is Cornstarch?
Cornstarch is a natural starch derived from corn. It’s widely used in both cooking and skincare because of its soft texture and soothing feel. In DIY beauty routines, cornstarch is often included in homemade masks and skin treatments due to its potential to:

- Support hydration
- Leave skin feeling smoother
- Help reduce minor irritation
What Is Milk of Magnesia?
Milk of magnesia (magnesium hydroxide) is best known as a gentle laxative, but it’s also used topically by some people because it may have soothing and antiseptic-like properties. These qualities are why it’s sometimes applied in skincare routines focused on oily skin or acne-prone areas.
DIY Cornstarch + Milk of Magnesia Face Mask
Ingredients
- 1 tablespoon cornstarch
- 2 tablespoons milk of magnesia
How to Prepare and Apply
- In a small bowl, combine the cornstarch and milk of magnesia.
- Stir thoroughly until you get a smooth, even paste.
- Apply to clean skin, focusing on areas with excess oil, blackheads, or shine.
- Leave on for 10–15 minutes, or until the mask fully dries.
- Rinse with lukewarm water, then gently pat dry (avoid rubbing).
Potential Benefits of This Recipe
This cornstarch and milk of magnesia mask is often used for cosmetic support, including:
- Soothing irritated-looking skin: Milk of magnesia may help reduce the look of redness and discomfort.
- Helping manage excess oil: The combination may improve the appearance of greasy or shiny skin, especially for oily or combination skin types.
- Supporting blemish-prone skin: Milk of magnesia is sometimes used to help reduce breakouts thanks to its antibacterial properties.
- Smoother skin feel: Cornstarch can soften the skin’s texture and enhance overall appearance.
Best Practices for Use
- Patch test first: Apply a small amount to a discreet area and wait to ensure you don’t react before using it on your face.
- Avoid broken skin: Do not apply to open cuts, wounds, or severely sensitive areas.
- Recommended frequency: Use 1–2 times per week. More frequent use is not necessary to see cosmetic benefits.
Important Precautions
Even though these ingredients are commonly used and generally considered mild, they should not be treated as a solution for serious skin conditions. If you have severe acne, persistent irritation, or worsening symptoms, it’s best to consult a dermatologist for proper evaluation and treatment.
Conclusion
A cornstarch and milk of magnesia mask may offer cosmetic benefits such as a more balanced look for oily skin, a softer feel, and a calming effect. As with many DIY skincare options, it can be a helpful complement—but professional guidance matters when skin concerns don’t improve.
This article is for informational purposes only and does not replace medical diagnosis or treatment. If you have questions or experience a reaction, consult a qualified healthcare professional.


