Science Project:

Do Certain Types of Deodorant Work Better For Certain Skin Types?

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Research Questions:

Everyone is different. Even people in the same family. Even twins. One difference is skin type, which can be dry, oily, and average. Cosmetics manufacturers have designed products that cater to each skin type. Of these products, deodorant comes in four basic formulations: a clear gel-base, a solid white chalk, a powder, and spray-on. But are all of them created equal?

Materials:

  • Deodorants in four types: Gel-based (clear); Solid-white; Powder; and Spray-On
  • Test subjects with dry, oily, and average skin.
  • Pen and paper to record and analyze your findings

Experimental Procedure

First, give each of your test subjects all four types of the deodorants and instruct them to:

  • Use each deodorant for four days and tell them to rate how well it controls sweat, controls odor, and how good it feels on the skin. Also allow them to put additional comments (a comment card is included below)
  • Also, put their skin type on the comment cards.

After the 16-day testing period is over, retrieve all the comment cards and analyze them for each skin type by using the charts below:

Sweat Control

Gel
Solid-White
Powder
Spray
Extras

Dry Skin

Oily Skin

Normal Skin

Odor Control

Gel
Solid-White
Powder
Spray
Extras

Dry Skin

Oily Skin

Normal Skin

Comfort on Skin

Gel
Solid-White
Powder
Spray
Extras

Dry Skin

Oily Skin

Normal Skin

----------------------------------------------------------------------------------------------------------------------------
COMMENT CARD

Skin Type ____________

Please circle one.

  1. Which deodorant was best at keeping you from sweating? Gel White Powder Spray

  2. Which deodorant was best at keeping you from smelling bad? Gel White Powder Spray

  3. Which deodorant felt the best on your skin when applied? Gel White Powder Spray

Please write any additional comments below:

Terms/Concepts: Dermatology; Perspiration; Sweat glands; Bacterial fermentation; Skin types; Skin; Odor & Sweat control

References:

Author: Sofia PC
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