The trend of using milk of magnesia as a makeup primer has gained attention among beauty enthusiasts seeking solutions for oily skin. While this over-the-counter antacid is traditionally used for digestive issues, some people have begun applying it topically as a mattifying base for makeup. This article explores the science behind this practice, its potential benefits and risks, and whether it's truly worth trying.
How Milk of Magnesia Works on Skin
Milk of magnesia, or magnesium hydroxide, works as a makeup primer primarily due to its absorbent properties. When applied to the skin, it can:
- Absorb excess oil from the skin's surface
- Create a temporary mattifying effect
- Provide a smooth base for makeup application
- Help control shine throughout the day
The alkaline nature of milk of magnesia can temporarily reduce surface oil, which explains why some users report positive initial results when using it as a primer.
Safety Concerns and Skin Health
Despite anecdotal success stories, dermatologists express several concerns about using milk of magnesia as a makeup primer:
- The highly alkaline pH can disrupt skin's natural acid mantle
- Regular use may lead to skin barrier damage
- Can cause excessive drying and irritation
- May trigger breakouts in sensitive skin
The skin's optimal pH is slightly acidic, ranging from 4.5 to 5.5. Milk of magnesia has a pH of around 10.5, which can significantly disturb your skin's natural balance.
Long-term Effects on Skin
Extended use of milk of magnesia as a makeup primer may lead to several complications:
- Chronic skin barrier dysfunction
- Increased sensitivity and irritation
- Paradoxical oil production
- Potential for contact dermatitis
- Uneven skin texture
Better Alternatives for Oily Skin
Instead of using milk of magnesia, consider these dermatologist-recommended alternatives:
Professional Makeup Primers
Look for primers specifically formulated for oily skin that contain:
- Silica
- Dimethicone
- Salicylic acid
- Zinc oxide
- Clay minerals
Skincare Solutions
Address oil control through proper skincare:
- Oil-free moisturizers
- Niacinamide serums
- Clay masks
- Non-comedogenic products
- Oil-absorbing sheets
Frequently Asked Questions
How does milk of magnesia work as a makeup primer for oily skin?
Milk of magnesia works by absorbing excess oil from the skin's surface and creating a mattifying effect. Its alkaline properties temporarily reduce surface oil, providing a smoother base for makeup application. However, this mechanism of action can be problematic for skin health.
Is it safe to use milk of magnesia on my face regularly as a makeup primer?
Regular use of milk of magnesia as a makeup primer is not recommended by dermatologists. Its high pH can disrupt the skin's natural barrier, leading to irritation, dryness, and potential long-term damage to skin health.
Can milk of magnesia help with acne or long-term oil control on the skin?
While milk of magnesia may provide temporary oil control, it's not an effective or safe solution for long-term oil management or acne treatment. Its use may actually worsen acne by disrupting the skin's natural balance and barrier function.
What are the possible side effects or risks of using milk of magnesia on the skin?
Potential side effects include skin barrier damage, increased sensitivity, irritation, dryness, paradoxical oil production, contact dermatitis, and uneven skin texture. The high pH level can significantly disrupt your skin's natural acidic balance.
Are there safer and more effective alternatives to milk of magnesia for mattifying oily skin before makeup?
Yes, there are many safer alternatives specifically formulated for oily skin control. These include professional makeup primers containing silica or dimethicone, oil-control skincare products with niacinamide or salicylic acid, and proper skincare routines designed for oily skin types.
