Cancun
Mexico · North America
The water
693 mg/LVery hard
Source: Universidad de Quintana Roo via Tecnologia y Ciencias del Agua · Published figure. Hardness counts dissolved calcium and magnesium in the water; it is the number your hair meets in the shower.
What very hard water does to hair
Build-up arrives quickly at this level: minerals coat the strand wash after wash, and porous or bleached hair suffers most, going rough, dull and brittle. Weekly chelation and richer conditioning are worth it on long stays.
The washing routine for Cancun
Chelating (detox) washes do the heavy lifting here: about every second wash, with a gentle shampoo between and rich conditioning afterwards. On a long stay, add a weekly deep treatment so porous or bleached hair does not turn brittle under the build-up.
Climate, from recent records (Open-Meteo, ERA5 2015-2024): July is the warmest month, averaging 31°C by day, and humidity peaks in September at about 83% on average. In the hot months, sun and sweat do as much damage as the water: shade, a hat and a rinse after swimming carry the routine. In the humid months, frizz is the main event; anti-humidity styling matters more than wash frequency.
Plugs and power for your tools
Sockets: Type A and B. Supply: 127 V, 60 Hz.
A dryer or styler wound for 230 V only will run weak on this supply, and a plug adapter does not change voltage. Check the label for dual voltage (100-240 V) before you travel.
Plug, voltage and frequency: IEC World Plugs and national standards.
Plan Cancun properly
The trip planner turns this water profile into a wash plan for your hair type, a chosen kit and a packing list, month by month.