Aloe Vera
Also known as: Aloe barbadensis, Aloe gel, Aloe latex
The succulent gel of sunburn fame — real topical benefits for burns and skin, with caution around oral use.
In short
Aloe vera is a succulent whose inner leaf gel contains water-binding polysaccharides that cool, hydrate, and soothe irritated skin. The evidence is strongest for topical use: aloe gel helps sunburn discomfort, aids wound and burn healing in several trials, and moisturizes. Oral aloe products are more controversial — the latex component is a harsh laxative, and some oral extracts were linked to kidney toxicity in long-term animal studies.
- Inner leaf gel: polysaccharide-rich hydration for skin
- Best evidence: sunburn soothing, burn and wound healing support
- Aloe latex is a strong laxative and should not be used regularly
- Oral high-dose extracts carry safety concerns (kidney toxicity in animal studies)
What is Aloe Vera?
Aloe vera is one of the oldest medicinal plants on record, appearing in ancient Egyptian texts as the 'plant of immortality.' Its modern skincare ubiquity rests on solid chemistry: acemannan and other polysaccharides bind water, form a protective film, and calm inflammatory signaling. Where the evidence splits is by route: topical aloe is well supported for burns, sunburn, and dry skin, while oral aloe — once marketed for digestion and 'detox' — has accumulated safety warnings.
Where it comes from
Natural sources
- Leaves of Aloe barbadensis (or Aloe vera), a desert succulent
- Inner gel used fresh or stabilized in cosmetics
- Yellow latex layer just under the rind contains anthraquinone laxatives
How it's made
Cosmetic aloe is usually stabilized or freeze-dried gel; oral products use whole-leaf extracts or purified latex.
What it does in products
Benefits
Sunburn and minor burn soothing
strong evidenceSeveral trials and reviews find aloe gel reduces burn healing time (by up to a few days in second-degree burns) and cools sunburned skin — the evidence behind its classic use.
Moisturizing and skin barrier
moderate evidenceAloe gel hydrates the stratum corneum without greasiness and is well tolerated on sensitive skin, earning its place in gel moisturizers.
Wound healing support
moderate evidenceHuman trials are mixed but lean positive for faster healing of minor wounds and post-procedure skin; most evidence comes from burns.
Digestive relief (latex, short-term)
moderate evidenceAloe latex is a potent stimulant laxative. Long-term or high-dose use is discouraged — chronic stimulant laxative use harms bowel function.
Side effects & safety
Safety considerations
- Oral aloe latex is contraindicated in pregnancy (uterine stimulation risk); topical gel is fine.
- Oral aloe latex can reduce absorption of medications and dangerously drop potassium when combined with diuretics.
- Adds to blood-sugar-lowering effects of diabetes drugs when taken orally.
- Not for: Pregnancy (oral forms)
- Not for: Inflammatory bowel disease (oral latex)
- Not for: Long-term oral use generally
How it's used
In supplements
Topical: apply stabilized gel or fresh inner-leaf gel to clean skin as needed. Oral: best avoided for routine use; if used for occasional constipation, short-term latex preparations only.
In skincare
Cosmetic formulas commonly use 0.5–10% aloe gel or juice; higher '100% gel' products still contain stabilizers and preservatives.
Regulatory status
- Topical aloe is a cosmetic ingredient; aloe latex was an FDA OTC laxative ingredient until concerns led to its removal from the laxative monograph in 2002. Oral supplements fall under DSHEA.
- GRAS (generally recognized as safe) for food use.
Popular products containing Aloe Vera
- Soothing Gel with Aloe VeraBanana Boat · Skincare
- Aloe Vera Gel — Stabilized 99% gelLily of the Desert · Skincare
- Aloe Vera JuiceLily of the Desert · Supplement
Product names and brands are shown for reference and belong to their respective owners.
Gel vs latex: two different plants, chemically
The aloe leaf has two very different products. The clear inner gel is mostly water with soothing polysaccharides — the skincare ingredient. The yellow latex between rind and gel is loaded with anthraquinones, powerful laxatives with real toxicity concerns. 'Whole leaf' oral products mix both worlds, which is why oral aloe supplements carry safety warnings that topical gel never would. Check whether a product is inner-leaf or whole-leaf before swallowing it.
Frequently asked questions
Does aloe vera help sunburn?
Yes — cooling and hydrating the skin, and trials support modestly faster healing for minor burns. Refrigerated gel is a classic remedy; it treats symptoms, not UV damage, so prevention with sunscreen remains the priority.
Is drinking aloe vera juice good for you?
The evidence for internal benefits (digestion, detox, blood sugar) is weak, and long-term oral use carries documented safety concerns, including kidney toxicity in animal studies. Topical use is the evidence-backed route; oral use should be short-term at most.
Can I use fresh aloe from the plant?
Yes, for topical use — slice open a leaf, scoop the clear inner gel, and patch-test first. Avoid the yellow latex, wash the gel, and use within a day or two since fresh gel spoils quickly.
The bottom line
Aloe vera earns its fame topically — burn soothing, hydration, and barrier care with a gentle touch. The oral side of the story is shakier and carries warnings; when in doubt, put it on your skin, not in your mouth.
References
- Aloe Vera. NCCIH (National Institutes of Health). https://www.nccih.nih.gov/health/aloe-vera
- Aloe vera for burn and wound healing — literature search. PubMed (National Library of Medicine). https://pubmed.ncbi.nlm.nih.gov/?term=aloe+vera+burn+wound+healing
- Aloe vera in dermatology (review). PubMed (National Library of Medicine). https://pubmed.ncbi.nlm.nih.gov/?term=aloe+vera+dermatology+review
- Aloe vera compound records. PubChem (National Library of Medicine). https://pubchem.ncbi.nlm.nih.gov/#query=aloe%20vera