Chemistry school project Grade 10

1. Chemicals in food and
cosmetics
By: Samar Hankir
Rawdat Al-Ma’arif School
Ms. Heyam Alzaka

2. Contents
Food
1. Colourings
2. Preservatives
Cosmetics
1. Sunblock
• Chemical
• Natural
2. Deodorants
3. Hair dyes
4. Soaps
5. Lip balms
6. Eyeliners & mascara

3. Foods
Colourings & Preservatives

4. Colourings
Amaranth (E123)
Side effects:
• Carcinogenic responses
• Embryo toxic responses
Found in:
• Food dye
• Cosmetics
Terminated
Tartrazine (E102)
Side effects:
• Child hyperactivity
• Cancer
Found in:
• Candy
• Beverages
• Baked goods
• Cosmetics
Safe

5. Preservatives

6. Preservatives
Sodium Nitrate
Side effects:
• Brain tumors
• Nose tumors
• Throat tumors
Found in:
• Mouth wash
• Explosives
• Fertilizers
Monosodium glutamate
Side effects:
• Headaches
• High blood pressure
Found in:
• Canned food
• Tomatoes
• Parmesan cheese
• Asian cuisines

7. Other methods
Curing
Curing is a method of
keeping bacteria away
from almost any type of
food using a good
amount of heat or
coolness since the
optimum condition for
bacteria is moisture and
warmth.
Oil
Oil is used to preserve
dairy products mainly
because it is
impermeable to Oxygen
and thus doesn’t allow
external sources to insert
the dairy products.

9. Cosmetics

10. Sunblock
Avobenzone
best available agent for
filtering skin damaging
UVA rays.
Side effects:
• Mimic hormones
• Disrupt hormone system
• Toxic to reproductive
system
• Interfere with normal
development
Oxybenzone (most common)
Side effects:
Under low conc.
• Causes allergic skin
reactions
• May disrupt hormones
Under high conc.
• Increase the risk of lower
birth weight

11. Schlumpf studies
According to Schlumpf 2008
European studies
detected certain chemicals
in normal sunscreens which
show traces in the mother’s
milk, indicating that the
developing fetus and
newborns are being
exposed to their substance.
According to Schlumpf 2010
At least one chemical is
present in 85% of milk
samples.

12. Mineral Sunblock - Zinc oxide
Zinc oxide is broad spectrum, it blocks UVA & UVB
light, zinc is less whitening on the skin and blocks
nearly all dangerous UV light. Inexpensive versions of
these sunscreens are gooey, and even though they
are used, most people don’t enjoy using them.
Newer Zinc oxide sunscreen contains particles so
small that they are almost transparent. These
sunscreens are called micronized and protect against
UV light perfectly.

13. Deodorants
Parabens (preservatives)
Antifungal agent
Side effects:
• Hormone disruptor
• Infertility
• Breast cancer
Also found in:
• Make up removers
(Bioderma Sensibio H2O)
• Mouth washes
• Lotions
Triclosan (pesticide) J&J
Side effects:
• affects body’s hormone
systems which regulate
metabolism
• disrupt normal breast
development
• Reproductive abnormalities
Also found in:
• Colgate Total (prevents
Gingivitis)
• Liquid hand soaps
• Body washes

14. Hair dyes
Lead Acetate
Side effects:
• Increases body ‘Pb’ level
(Lead is a potent
neurotoxin)
• Behavioral problems
• Learning problems
• Reduced fertility
• Miscarriage
Banned in Canada & Europe

15. Sodium Laureth Sulphate
Soaps
AKA…Pesticide
Side effects:
• Pollution causing cancer
• Skin & eye irritant
Also found in:
• Cleansing gel (Bioderma)
• Shampoo (Pert &
Garnier)
• Mouthwash
• Stain remover
Sodium hydroxide
Side effects:
• Severe damage to the
eye
• Nose irritation
• Lung issues
Transportation

16. Lip balms
Petrolatum
Side effects:
• Higher sun sensitivity
• Burning
• Itching
• Stinging
• Redness
• Irritation
Lubricants
• Ozokerit
• Ceresin
• Carnauba (Copernicia)

17. Eyeliners & mascara
Carbon black
Effects:
• Increased incidence
of cancer
Also found in:
• Blush
• Eye shadow
• Face powders
Nitrosamines
AKA – DEA, TEA
Side effects:
• Cancer
• Organ system toxicity
Found in almost
every care product.
Banned or found unsafe in
Canada

18. Resources
• http://www.ewg.org/2015sunscreen/report/the-trouble-with-sunscreen-
chemicals-/
• http://www.healthcentral.com/skin-care/medications/white-petrolatum-top-
470/side-effects/
• http://www.livestrong.com/article/460662-what-is-sodium-saccharin/
• http://www.livestrong.com/article/283850-why-is-sodium-nitrate-bad-for-
you/
• http://pubchem.ncbi.nlm.nih.gov/compound/sodium_nitrate
• http://www.eufic.org/article/en/artid/monosodium-glutamate/
• https://en.wikipedia.org/wiki/Monosodium_glutamate
• http://www.breastcancerfund.org/clear-science/environmental-breast-
cancer-links/cosmetics/?referrer=https://www.google.jo/
• http://www.safecosmetics.org/get-the-facts/chemicals-of-concern/red-list/
• http://ecowatch.com/2014/01/07/chemicals-cosmetics-avoid/

19. Resources
• http://www.safecosmetics.org/get-the-facts/chemicals-of-concern/red-list/
• HTTPS://SMARTKLEAN.WORDPRESS.COM/2011/09/08/TOP-10-
REASONS-TO-AVOID-SODIUM-LAURYL-SULFATE/
• http://www.mayoclinic.org/drugs-supplements/coal-tar-topical-route/side-
effects/drg-20068614
• http://www.gao.gov/products/HRD-78-22
• http://www.atsdr.cdc.gov/phs/phs.asp?id=1076&tid=34
• http://www.mayoclinic.org/drugs-supplements/coal-tar-topical-route/side-
effects/drg-20068614
• http://www.gao.gov/products/HRD-78-22
• http://www.livestrong.com/article/283850-why-is-sodium-nitrate-bad-for-you/
• http://pubchem.ncbi.nlm.nih.gov/compound/sodium_nitratehttp://www.eufic.
org/article/en/artid/monosodium-glutamate/
• https://en.wikipedia.org/wiki/Monosodium_glutamate

20. Thank you for listening 
Done by: Samar Hankir
Rawdat Al-ma’aref School
Ms. Heyam Alzaka
Time taken: 4 days