Aloe vera gel, the clear, mucilaginous substance found inside the plant’s leaves, is a popular natural remedy used globally for its skin-soothing properties, especially for minor burns and irritation. The gel contains numerous bioactive compounds, including polysaccharides, vitamins, and antioxidants, which provide its therapeutic effects. Since the gel is a natural, organic material, proper storage is necessary to maintain its quality and ensure these beneficial components remain active and safe for use.
Why Refrigeration is Recommended
Refrigeration is recommended for storing aloe vera gel to address two primary concerns: the degradation of its compounds and the risk of microbial contamination. The gel’s active ingredients, such as enzymes and vitamins, naturally break down when exposed to heat and light (oxidation). Lower temperatures significantly slow this chemical degradation, helping to preserve the gel’s potency for a longer duration.
The cool environment also inhibits the growth of bacteria and other microorganisms that proliferate in organic material, especially in homemade gel lacking preservatives. This reduced microbial activity keeps the product safer for topical application. An added benefit is the physical cooling sensation the chilled gel provides when applied to irritated skin, enhancing its soothing effect.
Storing Commercial, Homemade, and Plant Gel
Commercial Gel Storage
The best storage method depends on the form of aloe vera, as the presence or absence of preservatives dictates its shelf life. For commercial products, follow the instructions printed on the label, which often suggest storing the sealed container in a cool, dark place. Once opened, commercial gels typically remain effective for six to twelve months, thanks to added stabilizers and preservatives. Keeping the cap tightly sealed minimizes air exposure, which contributes to oxidation and microbial contamination.
Homemade and Plant Storage
Freshly extracted or homemade aloe vera gel has a very short refrigerated life because it contains no artificial preservatives. After scooping the gel, it should be stored immediately in an airtight, sterilized container in the refrigerator. Without additives, this pure gel should be used within five to seven days before its quality declines. If storing a whole, uncut aloe vera leaf, wrap the cut end tightly in plastic wrap and place it in the vegetable crisper drawer, where it can last for several weeks.
Signs That Aloe Vera Has Spoiled
Recognizing the signs of spoilage is necessary, especially with homemade preparations, which lack the stability of commercial products. The most obvious indicator of degradation is a change in the gel’s natural appearance. If any of these changes are observed, the gel must be thrown away, as using a spoiled product carries the risk of skin irritation or infection.
The signs of spoilage include:
- A change in appearance, such as turning brown, pink, or developing a cloudy, yellowish tint due to oxidation.
- Texture changes, where the smooth, thick consistency becomes unusually watery, slimy, or lumpy.
- A sour, fermented, or musty odor instead of the fresh, neutral scent, indicating microbial growth.
Long-Term Preservation Beyond the Fridge
For those who harvest large amounts of gel, freezing is the most effective method for long-term preservation. Freezing can extend the usability of homemade aloe vera gel for up to six months or even a year. A convenient way to freeze the gel is to pour it into ice cube trays, creating single-use portions that can be easily thawed as needed.
Before freezing, adding powdered ascorbic acid (Vitamin C) or tocopherol (Vitamin E) provides antioxidant properties that inhibit oxidation. Once the aloe cubes are solid, transfer them to a freezer-safe, airtight bag or container to prevent freezer burn and maintain quality.