Article by: Perry Romanowski

Welcome to Day 10 of the 30 Days to Become a Better Cosmetic Chemist series

This 30 day challenge is all about giving you lessons and basic exercises that will improve your abilities as a cosmetic chemist. cosmetic claims

Follow along in the workbook

In this episode

In today’s episode I’ll share:

  • What are cosmetic claims
  • Why cosmetic formulators need to care about claims
  • The 7 different types of claims
  • How to support cosmetic claims
  • What is meant by the word “puffery”

Relevant to Exercise

Analyze the claims of a product in the marketplace.

Step 1 – Get the label copy and ingredient list
Step 2 – Figure out what claims need to be supported
Step 3 – Figure out how they might be supported

Post your analysis in the comments below

TAGS:30 days


  1. Vijaykumar R Zala

    I have seen one advertise and its mentioned that our hair oil content 300 % more vitamin E.

    What does it mean i don’t know

    1. Perry Romanowski

      It’s not clear from the way you have written it. That could simply mean it has 300% more vitamin E than skin sebum or some product. When analyzing claims it’s important to write down exactly the words that they use.

  2. David Kaye

    You mention in the audio that we need to use a “control”. Supposing you take 100 people with psoriasis. You give your cream to these people and in less than 30 days, 87 of those 100 people have noticeable reductions in the inflammation, itching and other symptoms. So without a control, one could say “87% of people trying our cream show noticeable improvement in symptoms within 30 days”. So to add a control, you take what? a competitors cream? or a placebo? What would you use as a placebo cream? Any thoughts on this?

    1. Perry Romanowski

      Without a control you could say that, but your test doesn’t prove your cream works and you wouldn’t be able to make that claim in advertising. To do a proper test you need to have two groups of 100 (or two groups of 50 people). To one group you give them your cream. To another group you give them a placebo cream or some standard treatment for psoriasis. If your cream showed a statistically significant number of people who had an improvement then that would help support a claim that your product worked as a treatment.

  3. Chiara

    A question about anti-age claims. I think I could come up with some way to demonstrate a reduction of wrinkles but how can someone demonstrate to prevent signs of aging?

  4. Ugochi olabisi

    Claims can be supported by ensuring that the ingredients in the panel do what the product claims to do.

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