Aloe vera: the gel, the leaf, and how to use them at home

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One fleshy leaf on the windowsill gives you a clear, cool gel that herbalists have reached for over thousands of years. This page sets out what an Aloe vera leaf actually contains, how to cut and use it tonight, the difference between the harmless inner gel and the bitter yellow latex beside it, and who should leave the plant well alone.

What it is credited with

• Herbalists reach for fresh gel first for minor burns, sunburn and scalds, as a cooling application — a use recorded in European and American herbal practice since the 19th century.
• Traditional skin care credits it with soothing itchiness, insect bites and rough, irritated patches.
• Naturopathy values the gel on blemish-prone skin, applied thinly as a calming, non-greasy layer.
• It has a long reputation as a dressing for small grazes and chapped skin, kept for shallow, clean marks only.
• Folk cosmetic use credits it with comfort for a dry, tight scalp and with leaving hair softer and glossier after a rinse.
• In traditional herbal medicine, the bitter latex — sold as “bitter aloes” — was used as a strong purgative; modern herbalists treat it as an occasional remedy at most, never a daily one.
• Naturopathy credits drinking gel, taken in small quantities, with easing a heavy, sluggish digestion.
• Mayan tradition called the plant the “fountain of youth”, and it remains a staple of cosmetology for its moisture-holding qualities.

How to use it

Harvesting a leaf

• Choose an outer, lower leaf on a plant at least two years old — these hold the most gel.
• Cut it flush at the base with a clean knife. Stand it upright in a glass for 10 to 15 minutes so the yellow latex drains away.
• Trim off the thorny edges, lay the leaf flat, slice it lengthwise and spoon out the clear gel. Rinse the gel to remove any remaining yellow film.
• One medium leaf gives two to four tablespoons of gel.

On the skin

• Apply a thin film of fresh gel to the area, let it dry for a few minutes, repeat two or three times a day.
• For a cooling application after a day outdoors, keep a spoonful of gel in the fridge for an hour first.
• Do a patch test on the inner forearm and wait 24 hours before a first wider use.

As a hair and scalp rinse

• Blend two tablespoons of gel with half a glass of water.
• Work it into the scalp after shampooing, massage for two minutes, leave five minutes, rinse out.
• Once a week is plenty.

As a mouth rinse

• Dilute one teaspoon of gel in a small glass of water.
• Swill around the mouth for 30 seconds, then spit out. Morning and evening for a few days.

As a drink

• Stir one teaspoon of clear, latex-free gel into a glass of water or juice, once a day, for no more than a week or two at a stretch.
• A blend of orange juice, a spoon of honey and a spoon of gel, taken before breakfast, is the classic naturopathic version.
• Plain gel is not unpleasant but it is bland and slippery — lemon juice makes it far more drinkable.
• Commercial drinking gels labelled “decolourised” or “aloin-free” are the safer choice for internal use.

Frequently Asked Questions

The one thing to remember: drain the cut leaf upright for a quarter of an hour, rinse the gel, and use only the clear part — the yellow sap is the problem, not the gel.

Which part of the aloe leaf do I actually use?

Only the clear, jelly-like flesh in the middle of the leaf. Between that gel and the green rind lies a yellow latex that is intensely bitter and strongly purgative. Standing the cut leaf upright for 10 to 15 minutes lets that sap drain out, and a rinse removes the rest.

Can I drink aloe vera every day?

Naturopathy treats it as a short course rather than a daily habit: a teaspoon of clear, aloin-free gel in water, for a week or two at most. Plain gel tastes bland and slippery, so lemon juice helps. Anyone pregnant, breastfeeding, on medication or with a bowel complaint should skip internal use altogether.

How do I keep fresh gel once the leaf is cut?

In a sealed jar in the fridge it holds for about two days. For longer, freeze it in ice-cube trays and thaw one cube at a time. Cutting a fresh leaf when you need it is simpler still, since a mature plant supplies gel in any season.

Is aloe vera gel good for a scalp that feels dry and tight?

Traditional cosmetic use credits it with exactly that comfort. Blend two tablespoons of gel into half a glass of water, massage it into the scalp after shampooing, leave five minutes and rinse. Once a week is enough, and hair is generally left softer and glossier.

Does aloe vera protect me from the sun?

No. Aloe gel is used traditionally as a cooling application after sun exposure, but it offers no barrier against ultraviolet rays. Use a genuine sun protection product, and keep the gel for afterwards.

• Read also: Growing Aloe vera at home

This information is provided for general interest and reflects the traditional use of plants. It is not a substitute for medical advice. If you are on medication, pregnant, or in any doubt, ask a healthcare professional.