A non-modified hydroxypropyl methyl cellulose (HPMC) that has been developed for use in premium cementitious adhesive formulations (tile adhesive, ETICS mortars). It is designed to reduce the impact on cement hydration, improving early strength while preserving final strength in new low CO2 emission cements with low clinker content. Dow’s WALOCEL™ cellulose ether products are manufactured using cellulose from wood or cotton linter, resulting in an inherently bio-based additive with approximately over 78% bio-based carbon content.