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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: Environ Int. 2021 Jun 3;154:106655. doi: 10.1016/j.envint.2021.106655

Table 3.

Hair salon services provided and products used by hairdressers (n=23).

Hairdressers from Black Salons (N=11) Hairdressers from Dominican Salons (N=12)
Services provided n (%) n (%) p-valuea
Permanent waves or texturizing 5 (46) 9 (75) 0.22
Chemical straightening or relaxing 10 (90) 9 (75) 0.59
Bleaching or highlights 9 (82) 11 (92) 0.59
Semi-permanent hair coloring 10 (90) 8 (67) 0.32
Permanent hair coloring 10 (90) 11 (92) 1.00
Hair extensions (no adhesives or chemicals) 9 (82) 5 (42) 0.09
Hair extensions (with adhesive or other chemicals) 9 (82) 3 (25) 0.01
Hair drying with a blow dryer 11 (100) 12 (100) -
Flat ironing or curling with a curling iron 11 (100) 11 (92) 1.00
Putting hair in rollers 10 (90) 9 (75) 0.59
Brazilian blowout or keratin treatment 7 (64) 7 (58) 1.00
Braids on afro hair 4 (36) 4 (33) 0.10
Twists 8 (73) 5 (42) 0.21
Sister locs or locs (dreadlocks) 7 (67) 2 (17) 0.04
Afros (natural hairstyle) 6 (55) 1 (8) 0.03
Haircut 9 (82) 9 (75) 1.00
Hair washing 11 (100) 12 (100) -
Deep conditioner 11 (100) 11 (92) 1.00
Products Used
Shampoo 11 (100) 12 (100) -
Leave-in conditioner or detangler 11 (100) 10 (83) 0.48
Conditioner 11 (100) 12 (100) -
Hair spray 11 (100) 7 (58) 0.04
Hair oil 11 (100) 11 (92) 1.00
Hair gel or pomade 11 (100) 10 (83) 0.48
Hair mousse 11 (100) 11 (92) 1.00
Bleach or highlights 9 (82) 10 (83) 1.00
Hair dye 11 (100) 11 (92) 1.00
Chemical straightener or relaxer 10 (90) 9 (75) 0.59
Products for permanent waves and texturizers 6 (55) 7 (58) 1.00
Keratin treatment/Brazilian blowout 7 (67) 3 (25) 0.10
a

p-values based on Chi-square or Fischer’s exact test, where appropriate

Significant findings are listed in boldface (p< 0.05).