Aloe vera is best known for soothing minor burns, but the plant has a surprisingly wide range of uses, from skin care and oral health to blood sugar management. The thick, clear gel inside its leaves contains polysaccharides, vitamins, and enzymes that give it genuine biological activity, not just folklore appeal. That said, not every popular claim holds up equally well under scrutiny.
Wound Healing and Burns
This is aloe’s signature use, and the science backs it up. The gel contains a polysaccharide called acemannan that stimulates cell growth and speeds tissue repair. In animal studies, acemannan accelerated wound closure by roughly two days compared to untreated wounds, driving faster cell proliferation in the process. For everyday use, applying fresh gel or a high-concentration aloe product to minor burns, sunburns, and small cuts can reduce redness and help skin recover more quickly.
The cooling sensation you feel when you spread the gel on a burn isn’t just psychological. Aloe gel is about 99% water, so it immediately lowers skin temperature while forming a protective layer that keeps the wound moist. Moist wound environments heal faster than dry ones, which is part of why aloe outperforms simply leaving a minor burn exposed to air. For serious or blistering burns, though, aloe isn’t a substitute for proper medical treatment.
Skin Hydration and Anti-Aging
Aloe shows up in countless moisturizers and serums marketed for hydration and wrinkle reduction. When applied topically, the gel does help skin feel softer temporarily. But taking aloe supplements orally for skin benefits is a different story. A meta-analysis pooling data from clinical trials found that oral aloe vera supplements had little to no measurable effect on skin hydration at 4, 8, or 12 weeks compared to placebo. The same analysis found no meaningful reduction in transepidermal water loss, which is how quickly moisture escapes through your skin.
In short, rubbing aloe gel on your skin works as a topical moisturizer. Drinking it or taking capsules expecting younger-looking skin is not well supported by current evidence.
Blood Sugar Management
One of the more compelling areas of aloe research involves blood sugar. A meta-analysis published through the American Botanical Council found that oral aloe vera significantly reduced fasting blood glucose by an average of 46.6 mg/dL and lowered HbA1c (a marker of long-term blood sugar control) by about 1%. Those are meaningful numbers, especially for people with diabetes.
The effect was dramatically larger in people with higher starting blood sugar levels. Participants whose fasting glucose was 200 mg/dL or above saw an average reduction of nearly 110 mg/dL, while those starting below 200 mg/dL saw only a modest 7.6 mg/dL drop. This suggests aloe may be most relevant for people with poorly controlled blood sugar rather than as a general supplement for healthy individuals. If you’re managing diabetes and curious about aloe, it’s worth discussing with your care team, since it could interact with medications that already lower blood sugar.
Oral Health
Aloe-based mouthwashes have shown real promise in clinical trials. In a randomized controlled trial involving children aged 8 to 12, an aloe vera mouthwash improved plaque levels, gum inflammation, and gingival bleeding at rates comparable to chlorhexidine, which is the standard prescription-strength mouthwash dentists recommend. Both significantly outperformed a placebo rinse.
This matters because chlorhexidine, while effective, can stain teeth and alter taste with prolonged use. An aloe-based rinse could be a gentler alternative for people who want to reduce plaque buildup without those side effects. You can find aloe mouthwashes at most health food stores, though concentrations vary widely between products.
Digestive Uses and the Laxative Question
Aloe latex, the yellowish layer just beneath the plant’s outer skin, contains compounds called anthraquinones that act as a powerful stimulant laxative. This is distinct from the clear inner gel. For centuries, aloe latex was used to treat constipation, but in 2002 the FDA ruled that aloe-based stimulant laxative ingredients are not generally recognized as safe and effective for over-the-counter use. The agency had requested safety data, including carcinogenicity studies, and none were ever submitted. As a result, aloe cannot legally be marketed as an OTC laxative drug in the United States.
The inner gel, by contrast, does not have this stimulant laxative effect and is considered safe for most people when consumed in moderate amounts. Many commercial aloe juices are made from the inner gel with the latex removed. If you’re buying aloe juice, check that it’s been “decolorized” or “purified,” which indicates the anthraquinone-containing latex has been filtered out.
Air Purification and Household Use
Aloe plants are often recommended as natural air purifiers, and there’s a kernel of truth here. NASA’s famous Clean Air Study found that aloe vera can absorb certain volatile organic compounds like formaldehyde. In practice, though, you’d need an unrealistic number of plants to meaningfully filter the air in a room. The real household benefit is simpler: having a living aloe plant on your kitchen windowsill gives you instant access to fresh gel for minor burns and skin irritation whenever you need it. Just snap off a lower leaf, slice it open, and apply.
Safety for Pets
If you keep aloe plants at home, be aware that they’re toxic to cats and dogs. The ASPCA lists saponins and anthraquinones as the harmful compounds. If a pet chews on an aloe leaf, the typical symptoms are vomiting, diarrhea, and lethargy. The risk is highest with the latex and outer rind rather than the inner gel, but since animals tend to chew the whole leaf, it’s safest to keep aloe plants out of reach. Horses can also be affected, though vomiting is not typically seen in that species.
Getting the Most From Your Aloe Plant
The oldest, thickest leaves at the base of the plant contain the most gel. When you cut a leaf, let it stand upright for a few minutes to let the yellowish latex drain out before scooping the clear gel. Fresh gel can be stored in the refrigerator for about a week, or frozen in ice cube trays for longer storage. The cold gel feels especially soothing on sunburns.
For internal use, stick to commercially prepared aloe products that specify latex removal on the label. Whole-leaf preparations can contain significant amounts of anthraquinones, which cause cramping and diarrhea and carry unresolved safety questions with long-term use. Pregnant women should avoid ingesting aloe latex entirely, as it can stimulate uterine contractions.