The consensus of the OU’s poskim (rabbinic authorities) is that the following may be used on Passover without certification:

Aluminum foil

Aluminum foil baking pans

Baby ointments

Bags (paper or plastic)

Body wash

Bowl and tub cleaners

Candles

Cardboard

Carpet cleaners

Charcoal

Conditioners

Copper and metal cleaners  

Cork 

Cosmetics (except possibly lipsticks, see below)

Cupcake holders

Cups (paper, plastic or styrofoam)

Deodorants

Detergents

Dishwashing Detergents

Drain openers

Fabric protectors

Furniture polish

Glass cleaners

Hair gels, sprays and mousse 

Hair removers and treatments

Insecticides 

Isopropyl alcohol

Jewelry polish

Laundry detergents

Lotions

Napkins (paper)

Oven cleaners 

Paper towels

Perfumes

Plastic containers

Plates (paper, plastic or styrofoam)

Scouring pads and powders

Shampoos

Shaving cream and gel

Shaving lotion 

Silver polish 

Skin cream  

Soaps 

Suntan lotion

Talcum powder (100% talc)

Toilet bowl cleaner

Water filters

Oral Hygiene (Toothpaste, Mouthwash) & Flavored Lip Treatment (Lipstick, Lip Balm) Products: Rabbincal authorities disagree as to whether kosher certification of these items is required (both for Passover and year-round). Consult your Rabbi. Please see product pages in the Passover Guide for OU certified toothpaste.