MasterChem Industries. Suitable for interior and exterior use, Kilz Clean Start zero-VOC water-based primer, sealer, and stainblocker improves, strengthens, and reduces top-coat paint appearance, the maker says. The low-odor product provides a mildew-resistant finish, blocks tannin bleed, and cleans up with soap and water. 866.774.6371.

Benjamin Moore. The company has expanded its Aura low-VOC paint line to include Aura Bath & Spa, a matte-finish product specially formulated to lock out moisture and withstand heat and humidity, allowing its use in the steamy master bath. With its Color Lock technology, the paint never needs more than two coats, regardless of color, according to the firm. The paint is resistant to mildew and stains and is easy to clean. 800.344.0400.