Stop using my stuff then lying that you did

Always useing my skin care how I know well she leaves it dirty and in her room then acting like she doesn't know the thing is I have superrr sensitive skin I don't let anyone use my skin products even my fam so please stop doing it without asking and then lying about it plus she used my makeup brush and never gave it back and lied about it as well and the thing is I saw her using it so stop lying