the skeptical cosmetic ch i tchemist...most vilified cosmetic ingredientsmost vilified cosmetic...
TRANSCRIPT
Most Popular Beauty Myths• Natural is safer• Cosmetics are toxic• More expensive is better• Cosmetic woo works• Pantene is plastic
Most vilified Cosmetic IngredientsMost vilified Cosmetic Ingredients
1. Sulfates – SLS2. Parabens3. Talc 4 P t l t4. Petrolatum5. Mineral Oil6 Propylene Glycol6. Propylene Glycol7. DEA8. Formaldehydey9. Aluminum 10.Fragrance
Wrinkle CCream
• Consumer Reportsp– $57 Regenerist
cream better than $335 La Prarie$335 La Prarie cream
• BBC report– Boots $20 cream
reduces wrinkles
Skeptical Quiz
Which one is the FALSE headline?
• Rich people are more prone to skin cancerp p p
• Your skin is home to over 182 species of mites
• You can become addicted to tanning
• Prolonged use of muscle pain cream can kill you
Why be skepticalWhy be skeptical
• It’s scientificIt s scientific• Find what really works
Fi d t h t i t• Find out what is true• Learn new things• Harder to be fooled• Save money• Save money
Skeptical ToolkitSkeptical Toolkit
• Verification of facts• Reject arguments from authority• Reject arguments from authority• Falsifiable hypotheses • Don’t fall in love with your ideas• Occam’s Razor• Quantify whenever possible
No statement should be believed because it isbelieved because it is made by an authority.
Hans Reichenbach
What is good evidence?What is good evidence?
• TangibleTangible• Verifiable
P f bl i d d t• Preferably, independent• Anecdotal evidence is not evidence
– Not reliable– Memory errorsy– Perception errors
Example of bad experimentExample of bad experiment
If you use a product 3 things can happenIf you use a product 3 things can happen1. Gets better2 Gets worse2. Gets worse3. Stays the same
• If you use no treatment, 3 things happen
4045
303540
No Treatment
202530 No Treatment
Product A
101520
Best
05
10 technology
01 Week 2 Weeks
Better experiment
The trouble withThe trouble with people is not what they don’t know, butthey don t know, but that they know so much that ain’t so.
-Josh Billings
Reliable Online SourcesReliable Online Sources
• Peer reviewed journalsPeer reviewed journals– JSCC
PubMed– PubMed – Cochrane Reviews
A i A d f D t l– American Academy of Dermatology
• Mostly reliable– Wikipedia
• There are two types of knowledge– The kind that has been proven wrong– The kind that hasn’t yet been proven wrong
- Karl Popper
ContactContact
Vice President Brains Publishing Inc.
Email: Perry Romanowski@gmail comEmail: [email protected]
LinkedIn: PerryRomanowski
Phone: 708-207-7642
Twitter: thejoggler
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