Product Safety & Clinical Testing

We don't play games with your skin. We submit our products to third-party clinical testing to ensure they're safe and do what they say they will.

Our Testing Protocols

We run safety tests to make sure our products are not going to hurt you.

48-Hour Patch Test WHAT IS IT

A 48-hour patch test shows how skin reacts to a product.

A small amount of the product is placed on a patch and applied to the skin of participants, usually on the back or upper arm. The patch stays in place for 48 hours, and researchers check the area for signs of irritation like redness, itching, or swelling.

If the skin shows little to no reaction, the product is considered non-irritating under normal use conditions.

Human Repeat Insult Patch Test (HRIPT) WHAT IS IT

The Human Repeat Insult Patch Test is a more intensive study used to evaluate whether a product could cause irritation or allergic reactions over repeated use.

During this test, small patches containing the product are applied to volunteers' skin multiple times over several weeks. After this exposure period, participants are tested again to see whether their skin has developed any sensitivity to the product.

The HRIPT is designed to identify ingredients that might cause delayed irritation or allergic contact dermatitis when used repeatedly.

Efficacy Testing WHAT IS IT

We run efficacy tests to prove that our products do what they say they will. These tests prove that our soap does actually moisturize your skin.

Completed Tests

We are working on compiling all of our tests for public release. As we work through them we will be adding to this.

Cheeky's Latest Clinical Study SEE RESULTS

To evaluate our bar soap, we worked with an independent research group and conducted a clinical study with a representative population of volunteers. We collected data in three areas:

Skin Hydration – We used precise measurements in a controlled clinical research environment to assess how much moisture the skin retained after washing with our soap; both immediately after use and 2 hours later.

Skin Barrier Function – We also measured water loss from the skin's surface under the same research conditions. This provided data on how well the skin's barrier integrity was maintained and retained its natural moisture.

Consumer Experience – To supplement the quantitative testing, participants also completed structured questionnaires about their experience with focus on how their skin felt after use; specifically emphasizing skin comfort, softness, and if they experienced any irritation.

The quantitative data and participant feedback allowed us to understand the measurable effects on skin health and personal experience from using the soap.

Key Clinical Outcomes

Hydration Efficacy:

1. The bar soap produced a statistically significant increase in skin hydration compared to untreated skin.

2. Skin hydration improved by ~78% within 15 minutes and remained ~62% higher after 2 hours.

Skin Barrier Protection:

1. TEWL (trans-epidermal water loss) measurements showed a 22% reduction in water loss at 15 minutes and 18% reduction at 2 hours.

2. This indicates the soap strengthens and protects the skin barrier, just behind petroleum jelly in performance.

Consumer Perception (Self-Perception Questionnaire):

  • At 15 minutes:
    • 100% said their skin felt immediately moisturized.
    • 94% said skin felt soft and smooth.
    • 97% said they were satisfied overall.
  • At 2 hours:
    • 100% still reported feeling moisturized, nourished, gentle, and irritation-free.
    • 100% said they would recommend the soap to friends/family with dry skin.

Safety & Tolerability:

  • No adverse reactions were reported among all 32 participants.
  • The soap was rated as gentle and non-irritating, suitable for everyday use—even on sensitive areas.

The Full Report

We have finished preparing the report for public release. You can access it below.

Read Full Clinical Study