How To Avoid Oxidation

To avoid oxidation in general (not just in makeup), you need to minimize exposure to oxygen, heat, light, and moisture, depending on the context. Here’s a breakdown by category:

🔬 What Is Oxidation?

Oxidation is a chemical reaction where a substance loses electrons, often to oxygen. It can cause:

Food to spoil or turn brown
Metals to rust
Cosmetics to darken
Oils to go rancid

🛡️ General Ways to Prevent Oxidation

1. Limit Exposure to Oxygen

Use airtight containers for food, skincare, and cosmetics.
Seal packages tightly after use.
Use vacuum-sealed bags for long-term food storage.

2. Keep Items Cool

Heat accelerates oxidation.
Store in a cool, dry place — especially oils, cosmetics, and vitamins.
Refrigerate perishable items (like fruits, meats, and some skincare).

3. Avoid Direct Sunlight

UV rays speed up oxidation, especially in food, skincare, and plastics.
Use dark or opaque containers to protect light-sensitive products.

4. Use Antioxidants

In skincare and food, antioxidants like Vitamin C, Vitamin E, and citric acid neutralize free radicals and slow oxidation.
Some packaging includes oxygen absorbers (like in dried snacks or supplements).

5. Control Humidity

Moisture can increase oxidation, especially in metals and powders.
Use desiccants (like silica gel) in containers.

🍏 Special Cases

Food

Fruits: Add lemon juice to cut fruit to slow browning (contains Vitamin C).
Oils: Buy small quantities, keep sealed, and store away from light and heat.
Wine: Use a wine stopper or inert gas spray to preserve opened bottles.

Metals

Keep dry: Moisture speeds rusting (oxidation of iron).
Apply coatings: Use paint, oil, or rust inhibitors.
Galvanize: Coat with a protective metal like zinc.

Cosmetics & Skincare

Use pump packaging instead of open jars.
Close lids tightly and avoid double-dipping fingers or tools.
Store in a cool, dark place.