Ingredient review
Cyclotetraglucose
INCI: CYCLOTETRAGLUCOSE
A gentle, sugar-based humectant that hydrates and soothes without irritation, ideal for sensitive or reactive skin.
In plain English
Cyclotetraglucose is a small ring-shaped molecule made from glucose (a type of sugar). In skincare, it acts like a sponge that pulls water into the outer layer of your skin and helps keep it there. It also has mild soothing properties, which can help calm redness or irritation. Because it's very gentle and non-irritating, it's often used in products for sensitive skin or in formulas that aim to hydrate without causing breakouts.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- biotech
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Cyclotetraglucose is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Cyclotetraglucose.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
Cyclotetraglucose is a cyclic oligosaccharide composed of four glucose units linked together. It is produced through enzymatic conversion of starch, making it a biotech-derived ingredient. Its ring structure allows it to hold water and interact gently with the skin's surface.
How it works
Cyclotetraglucose works as a humectant by attracting moisture from the air or from deeper layers of the skin into the stratum corneum (the outermost skin layer). Its cyclic structure also gives it mild film-forming properties, which can help reduce water loss (transepidermal water loss, or TEWL). Additionally, it has been shown to inhibit certain inflammatory signals, contributing to its soothing effect.
Pros
Very gentle on skin
Cyclotetraglucose has a low irritation and comedogenic risk, making it suitable for sensitive, acne-prone, or rosacea-prone skin types.
Dual hydrating and soothing action
It not only attracts moisture but also helps calm redness and irritation, offering two benefits in one ingredient.
Cons and cautions
Less research than classic humectants
Compared to glycerin or hyaluronic acid, cyclotetraglucose has fewer published studies, so its long-term benefits are less documented.
Milder hydration effect
Its water-binding capacity is moderate, so it may not be the best choice for very dehydrated skin that needs intense moisture retention.
Best for
- People with sensitive or reactive skin looking for gentle hydration
- Those with dry or dehydrated skin who want a non-irritating humectant
Use caution if
- Individuals with rare allergies to glucose-derived ingredients (extremely uncommon)
Usage tips
Safety summary
Cyclotetraglucose is considered safe for topical use. It has low irritation and sensitization potential, and no significant safety concerns have been reported in cosmetic concentrations. Patch testing is rarely needed, but those with extreme sensitivity to glucose derivatives should check with a dermatologist.
Research notes
Research indicates cyclotetraglucose acts as a humectant and has anti-inflammatory properties in vitro. Human studies are limited, but existing data support its use as a gentle hydrator. More clinical trials are needed to fully compare its efficacy to traditional humectants.
Common label clues
- Typical concentration
- 0.1% to 2% in leave-on products
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA as a cosmetic ingredient. No known restrictions.
- Common uses
- Serums, Moisturizers, Toners, Eye creams, Soothing masks
- Environmental note
- Produced via enzymatic conversion of renewable starch sources, making it a relatively sustainable and biodegradable ingredient.
Good to know
- Cyclotetraglucose is often derived from corn or potato starch, making it suitable for plant-based formulations.
- It is sometimes listed as a 'cyclic tetrasaccharide' on ingredient labels.
- This ingredient is stable across a wide pH range, so it works well in both acidic and neutral formulas.
Common questions
What is Cyclotetraglucose in beauty products?
Cyclotetraglucose is a small ring-shaped molecule made from glucose (a type of sugar). In skincare, it acts like a sponge that pulls water into the outer layer of your skin and helps keep it there. It also has mild soothing properties, which can help calm redness or irritation. Because it's very gentle and non-irritating, it's often used in products for sensitive skin or in formulas that aim to hydrate without causing breakouts.
What does Cyclotetraglucose do in a beauty product?
Cyclotetraglucose works as a humectant by attracting moisture from the air or from deeper layers of the skin into the stratum corneum (the outermost skin layer). Its cyclic structure also gives it mild film-forming properties, which can help reduce water loss (transepidermal water loss, or TEWL). Additionally, it has been shown to inhibit certain inflammatory signals, contributing to its soothing effect.
Is Cyclotetraglucose safe for most people?
Cyclotetraglucose is considered safe for topical use. It has low irritation and sensitization potential, and no significant safety concerns have been reported in cosmetic concentrations. Patch testing is rarely needed, but those with extreme sensitivity to glucose derivatives should check with a dermatologist.
Who should be careful with Cyclotetraglucose?
Individuals with rare allergies to glucose-derived ingredients (extremely uncommon)
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.