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Aloe Vera — The Juje Library · An Ingredient Study
The Juje Library · An Ingredient Study · No. I

Aloe Vera

al-oh · vair-uh
Aloe Barbadensis Leaf Juice Powder (200×)
A soothing botanical · Renew, No. 3
Water droplets resting on the fleshy green leaves of an aloe plant
Aloe barbadensis — a desert succulent that learned to hold water in the heat.

In our ritual it does one thing, beautifully — it soothes the feeling of a reactive scalp, and lays a light, cooling veil of hydration that never sits heavy.

The essentials
INCI name
Aloe Barbadensis Leaf Juice Powder (200× concentrate)
Also called
Aloe · true aloe · Aloe barbadensis Miller
Family
Asphodelaceae (once Liliaceae)
Part used
The clear inner-leaf gel
Character
Soothing botanical · humectant
Form in Juje
Spray-dried 200× powder, in the water phase
It carries
Acetylated polysaccharides, sugars, amino acids, vitamins, minerals, polyphenols
Its role
Comfort · lightweight hydration · a cooling feel
Where it lives
No. 3 Scalp Elixir (Renew)
In one line

Aloe is a succulent-leaf extract used in scalp care to soothe, calm and comfort the feeling of a sensitive scalp, while adding a lightweight, cooling layer of hydration.

It is the botanical heart of the No. 3 Elixir — the ingredient that makes a targeted, leave-on treatment feel like relief rather than another step.

Origin

A plant built to hold water

What tradition felt for thousands of years, the plant's chemistry now explains.

Aloe barbadensis is a stemless succulent whose thick leaves are, in effect, water tanks. Slice one open and the inner fillet is a clear, cool gel — the tissue where the plant banks moisture and the sugars that hold it. That gel has been reached for across Egyptian, Greek, Ayurvedic and West African traditions, wherever people needed to calm and comfort skin.

For Juje the plant sits inside a more personal lineage. The brand began with a grandmother's Sunday scalp-oiling ritual — an unhurried act of care passed through hands. Aloe belongs to that world: the botanical you feel go cool against a tight, irritated scalp, and trust because generations already did.

Slices of aloe leaf showing clear inner gel, on a rustic wood surface
The inner fillet, where the water and the sugars are kept.
Ninety-nine parts water. The character lives in the last one.
Composition

The molecular portrait

Fresh gel is almost entirely water. Its soothing character lives in a small, functional cast of sugars, proteins and plant compounds.

ConstituentMoleculesWhat it brings to skin & scalp
Acetylated polysaccharides
Acemannan & glucomannan — long, mannose-rich chains
The signature of aloe. Large water-binding sugars that form a light, breathable film and give the gel its cushioned feel.
Humectant sugars
Glucose, mannose, free monosaccharides
Small, fast humectants that draw and hold water at the surface for an immediate cooling, hydrated sensation.
Amino acids & proteins
Up to ~20 amino acids, glycoproteins, native enzymes
Conditioning support, and part of skin's own natural moisturizing vocabulary.
Vitamins & minerals
A, C, E, B-group, folate · calcium, magnesium, zinc
Antioxidant and comfort-supporting nutrients carried in the natural leaf matrix.
Plant phenolics
Flavonoids, polyphenols, tannins, chromones
Antioxidant plant compounds behind aloe's long-observed soothing reputation.

The polysaccharide fraction is the most studied part of the plant — acemannan, a highly acetylated mannose polymer, is widely named the primary polysaccharide of the inner gel, and its water-holding behaviour is what's credited for aloe's cooling, comforting feel.

How it works

Four quiet mechanisms

All sensory, all at the surface — which is exactly why aloe suits a leave-on treatment on a reactive area.

i.

It holds water

Aloe's sugars act as humectants — drawing and holding water at the scalp's surface, so hydration arrives fast and light rather than greasy.

ii.

It cools and calms

As the water settles, the large sugars leave a breathable veil — the source of that immediate cool, calm feeling on a scalp that's tight, warm or itchy.

iii.

It works with skin

Aloe's humectants belong to the same water-loving chemistry skin uses to stay supple, so its moisture works with the scalp rather than coating over it.

iv.

It feels like relief

Comfort is a real cosmetic outcome. That cool, non-heavy feel is what turns a step into a ritual — something you actually reach for.

In the literature

What the research shows

Evidence on aloe as a cosmetic humectant — studies of the raw material in topical formulas, a window into how it behaves.

Aloe-containing creams raised skin hydration.

In a controlled forearm study, formulations carrying freeze-dried aloe at low use levels (0.10–0.50%) measurably increased the water content of the outer skin after one and two weeks of daily use — direct evidence of aloe's humectant, moisture-holding behaviour in a real formula.

Dal'Belo et al., Skin Research and Technology, 2006 — corneometry & TEWL, 20 subjects. [I]
Support for hydration and the skin's moisture barrier.

Separate work applying aloe-extract emulsions reported gains in surface hydration alongside a favourable effect on transepidermal water loss — the standard read-out for how well a formula helps skin hold moisture at the surface.

Instrumental studies of aloe-based moisturisers. [VI]
A well-characterised soothing botanical.

Peer-reviewed reviews consistently attribute aloe's moisturising, comforting reputation to its acetylated polysaccharides, and document its broad nutrient profile of vitamins, minerals, amino acids and plant phenolics.

Reviews of aloe composition & cosmetic use. [II–V]

Read honestly, this is the evidence for aloe as an ingredient. It supports the language we use — soothing, comforting, lightweight hydration — and nothing beyond it. Juje products are cosmetics, made to improve how the scalp and hair look and feel.

The raw material

Why a 200× powder

We don't use fresh gel. We use a spray-dried, 200-fold concentrate — a choice about potency, stability and control.

What "200×" means. Two hundred parts of fresh leaf juice are concentrated into one part powder. A small, precise dose therefore carries the sugar and polysaccharide load of a much larger volume of gel — meaningful aloe from a light hand.

Why not fresh gel. Fresh aloe is mostly water and famously inconsistent batch to batch. A standardised concentrate is more stable, easier to dose accurately, and keeps the Elixir reproducible — the same treatment, every time.

Quality that matters. An aloe powder is only as good as how gently it was processed and how much of its native polysaccharide it keeps. Ours is selected as a concentrated leaf-juice powder specified for that carried potency.

200×
the concentration
of the powder
~99%
water in the fresh
leaf it replaces
No. 3
the one step
it lives in
Fine, pale ivory botanical concentrate powder
The concentrate, before it meets the water phase.
In the formula

Where it lives in the ritual

Aloe powers a single, deliberate step — where its job is comfort, and only comfort.

A pipette releasing a clear, lightweight serum onto a soft cream ground

Light, water-phase, weightless — the character aloe lends a leave-on treatment.

Renew · No. 3

Scalp Elixir

A targeted, leave-on treatment

Apply to problem areas only — not all over the scalp. The Elixir is precision care for the spots that feel reactive or in need of focus, and aloe is what makes that focused touch feel like relief.


Aloe works alongside
Capixyl™Copper Tripeptide-1PanthenolSqualane

A division of labour. The peptides carry the appearance story; squalane carries barrier-friendly lipid moisture. Aloe carries feel — the cool, comforted sensation that makes a targeted treatment welcome on a reactive area.

A light hand, on purpose. Because the powder is 200× concentrated and sits in the water phase, aloe brings its humectant character without weight. Nothing about the Elixir should feel heavy — aloe is central to keeping it airy.

One step, not four. Aloe appears only in No. 3. That restraint is the point — each ingredient earns its place in the step where it does the most good.

For our partners

The language we stand behind

For retail, stylists and press. Aloe is a cosmetic soothing agent — the words on the left are ours; the words on the right stay off-limits, whatever a source may say of the plant.

We say
  • Soothes and comforts the feeling of a sensitive scalp
  • Calms the sensation of tightness or itch
  • Delivers lightweight, cooling hydration
  • Helps the scalp feel calm and cared for
  • A soothing botanical, rich in humectant sugars
We never say
  • Heals, treats or repairs the scalp
  • Anti-inflammatory · reduces inflammation
  • Treats dermatitis, psoriasis or eczema
  • Promotes growth or "stronger roots"
  • Any medical or drug claim

The rule is simple: describe what aloe helps the scalp feel and look like — never what it does to a condition.

Stewardship

Grown gently, chosen carefully

Aloe is one of cosmetics' more renewable botanicals — a hardy succulent that thrives on marginal land with little water, harvested leaf by leaf without taking the plant. Choosing a concentrate also means less raw material moved and stored to deliver the same character. Our commitment is a consistently specified, responsibly produced aloe, so the promise of the Elixir holds true from the first batch to the last.

Questions

Asked & answered

Is aloe vera good for the scalp?+

Aloe is a soothing botanical that calms and comforts the feeling of a sensitive or reactive scalp and adds lightweight, cooling hydration. It's a key part of our No. 3 Scalp Elixir.

Is the Elixir used all over the scalp?+

No. The No. 3 Scalp Elixir is a targeted treatment for problem areas only, not an all-over product. Apply it precisely where you want to focus.

Why powder instead of fresh gel?+

A spray-dried 200× concentrate is far more stable and consistent than fresh gel, which is mostly water and varies batch to batch. The powder lets us dose aloe precisely and keep the Elixir reproducible, while still carrying a meaningful load of its humectant sugars.

Does aloe make the Elixir feel greasy?+

The opposite. Aloe sits in the water phase and brings light, cooling hydration rather than oil — a large part of why the Elixir stays airy and never heavy.

Sources

References

  1. Dal'Belo SE, Rigo Gaspar L, Maia Campos PMBG. Moisturizing effect of cosmetic formulations containing Aloe vera extract in different concentrations assessed by skin bioengineering techniques. Skin Research and Technology, 2006.
  2. Hamman JH. Composition and applications of Aloe vera leaf gel. Review of inner-leaf polysaccharides — acemannan, glucomannan.
  3. Femenia A, et al. Compositional features of polysaccharides from Aloe vera plant tissues.
  4. Review: Pharmacological and therapeutic activities of Aloe vera and its constituent acemannan.
  5. Structural characterisation of O-acetyl-β-(1→4)-glucomannans of Aloe barbadensis (acemannan-type polymers).
  6. Instrumental evaluations of aloe-based moisturisers measuring skin hydration and transepidermal water loss.

The Juje Library is educational. It describes ingredients and the research interest in them — not results from any Juje product. Juje products are cosmetics, intended to improve the look and feel of the scalp and hair, and are not intended to diagnose, treat, cure or prevent any condition. The studies noted here were conducted on aloe extract in various formulations, not on Juje formulas.

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