Ingredient review

Ozonized Sesame Seed Oil

INCI: SESAMUM INDICUM (SESAME) SEED OIL (AND) OZONE

Ozonized sesame seed oil is a unique ingredient that combines the moisturizing benefits of sesame oil with the purifying properties of ozone, making it a promising option for acne-prone or irritated skin.

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In plain English

Ozonized sesame seed oil is regular sesame oil that has been infused with ozone gas. This process changes the oil's chemistry, making it more stable and giving it new properties. In skincare, it acts as a moisturizer while also helping to calm redness and support a clearer complexion. It's not a cure for acne, but it may help reduce the appearance of blemishes and soothe irritated skin.

Review score

Safety, usefulness, and evidence

3.8Good
3.8/ 5

Potentially useful with some tradeoffs

The evidence base is still emerging, so marketing claims deserve extra caution.

Risk flags are low for most users, though the finished product can still irritate.

Source
semi synthetic
Evidence
emerging
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Ozonized Sesame Seed Oil 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Ozonized Sesame Seed Oil.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

emerging

The ingredient may be promising, but claims should be treated more cautiously.

What it is

Ozonized sesame seed oil is a semi-synthetic ingredient created by bubbling ozone gas through cold-pressed sesame seed oil. The ozone reacts with the oil's unsaturated fatty acids, forming ozonides and other oxygen-rich compounds. This process stabilizes the oil and enhances its antimicrobial and soothing potential.

How it works

When applied to the skin, ozonized sesame seed oil delivers oxygen to the surface, which can help create an environment less favorable for acne-causing bacteria. The ozonides also have mild anti-inflammatory effects, helping to calm redness and irritation. Meanwhile, the sesame oil base provides emollient properties, softening and moisturizing the skin without clogging pores.

Pros

Gentle purifying action

Unlike harsh acne treatments that can strip the skin, ozonized sesame seed oil works by creating an oxygen-rich environment that may discourage acne bacteria, all while moisturizing the skin.

Soothing for irritated skin

The ozonides in this oil have mild anti-inflammatory properties that can help calm redness and discomfort, making it a good option for sensitive or reactive skin types.

Cons and cautions

Strong, distinctive odor

Ozonized oils have a characteristic sharp, slightly metallic smell that can be off-putting. This odor may linger on the skin and can be difficult to mask with fragrance.

Limited research on cosmetic use

While ozonized oils have been studied in medical contexts (like wound healing), there are few high-quality studies specifically on their use in everyday skincare products, so long-term benefits are not well established.

Best for

  • People with mild to moderate acne looking for a non-drying option
  • Those with sensitive or easily irritated skin who want a gentle purifying ingredient

Use caution if

  • Anyone with a known allergy to sesame seeds or sesame oil

Usage tips

Start with a low-concentration product (under 5%) to see how your skin reacts
Apply after cleansing and before heavier creams to allow the oil to absorb
Store products containing ozonized oil in a cool, dark place to preserve stability

Safety summary

Ozonized sesame seed oil is considered safe for topical cosmetic use at typical concentrations. The main concerns are potential allergic reactions in people with sesame allergies and skin irritation if used in very high concentrations. The strong odor may be a sensory issue for some users.

Research notes

Research on ozonized oils in dermatology is still emerging. Most studies focus on medical applications like wound healing and disinfection, with limited data on cosmetic use for acne or anti-aging. Early evidence suggests antimicrobial and anti-inflammatory potential, but more human trials are needed.

Common label clues

Typical concentration
1% to 10% in leave-on products; up to 20% in rinse-off products
Regulatory status
Generally recognized as safe for cosmetic use in the US and EU when properly formulated. Not approved as a drug or medical treatment.
Common uses
Acne treatments, Anti-aging creams, Soothing balms, Wound care products
Environmental note
Sesame is a relatively low-impact crop that requires less water than many other oilseeds. The ozonation process itself does not produce significant waste.

Good to know

  • Ozonized sesame seed oil is different from regular sesame oil—the ozonation process changes its chemical structure and properties
  • The strong odor is a natural result of the ozonation process and not a sign of spoilage
  • This ingredient is often found in products marketed as 'oxygenating' or 'ozone therapy' for acne

Common questions

What is Ozonized Sesame Seed Oil in beauty products?

Ozonized sesame seed oil is regular sesame oil that has been infused with ozone gas. This process changes the oil's chemistry, making it more stable and giving it new properties. In skincare, it acts as a moisturizer while also helping to calm redness and support a clearer complexion. It's not a cure for acne, but it may help reduce the appearance of blemishes and soothe irritated skin.

What does Ozonized Sesame Seed Oil do in a beauty product?

When applied to the skin, ozonized sesame seed oil delivers oxygen to the surface, which can help create an environment less favorable for acne-causing bacteria. The ozonides also have mild anti-inflammatory effects, helping to calm redness and irritation. Meanwhile, the sesame oil base provides emollient properties, softening and moisturizing the skin without clogging pores.

Is Ozonized Sesame Seed Oil safe for most people?

Ozonized sesame seed oil is considered safe for topical cosmetic use at typical concentrations. The main concerns are potential allergic reactions in people with sesame allergies and skin irritation if used in very high concentrations. The strong odor may be a sensory issue for some users.

Who should be careful with Ozonized Sesame Seed Oil?

Anyone with a known allergy to sesame seeds or sesame oil

Research sources

Cosmetic Ingredient Review (CIR) - Ozonized Oils Safety AssessmentOpenPubMed - Ozonized Oils in DermatologyOpenEuropean Chemicals Agency (ECHA) - OzoneOpen

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.