When a state agency removes certification and training requirements for hairdressers, this typically leads to an increase in the supply of aspiring hairdressers, as more individuals may choose to enter the profession without the barriers of certification and training.
Given this situation, the likely outcome in the labor market for hairdressers is:
The wages paid to hairdressers will fall.
As the supply of labor increases and if demand does not change, the equilibrium wage in the market tends to decrease.