you are in the lab and notice another student applying cosmetics why is the dangerous and not allowed in the lab​

The cosmetics products have the potential to absorb chemical vapour and dust. Thus, applying cosmetics in the lab enables chemical absorption and can be a reason for skin exposure, particularly in the areas where hazardous chemicals are stored. Thus, eating, drinking, and applying cosmetics in the lab is restricted.

because cosmetics products have the potential to absorb chemical vapour and dust

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.