Oops, it doesn't look like 'shampoo shampoo day' is a national day..

Other days

ponytail

Ponytail Day

buddy

Buddy Day

book

Book Day

youth

Youth Day

stress awareness

Stress Awareness Day

gum

Gum Day

hot chocolate

Hot Chocolate Day

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day

aloxolt

Aloxolt Day

latina equal pay

Latina Equal Pay Day