US Borax Pentahydrate prices are expected to firm modestly in June 2026, supported by tight export allocations, elevated mining and haulage costs, and steady demand from fiberglass and agricultural sectors. California water use restrictions continue to constrain output, while diesel and explosives costs keep production economics firm. Although ceramics and construction may soften seasonally, pre winter restocking and precautionary buying ahead of tariff adjustments could offset some weakness. Overall, June is projected to show a slight upward bias unless export flows loosen or mining input costs fall sharply. May set the foundation for this firmness. Prices rose 5.3% month on month, driven by strong export commitments, higher operating costs, and robust fiberglass demand. Agricultural micronutrient buyers increased call offs, while detergent and cleaner formulators provided steady support. Rising bauxite and diesel costs, tighter water use compliance, and higher container rates all contributed to reduced merchant availability. With supply constrained and industrial demand steady, June is expected to maintain a mildly bullish tone.
