Medan
Indonesia · Asia
The water
75 mg/LModerate
Source: PDAM Tirtanadi Delitua reservoir water study (Universitas Sumatera Utara) · Published figure. Hardness counts dissolved calcium and magnesium in the water; it is the number your hair meets in the shower.
What moderate water does to hair
A forgiving middle ground: most routines work as they are, with a light mineral film building slowly over time. An occasional clarifying wash keeps shine from dulling.
The washing routine for Medan
Keep your normal rhythm and slot a detox (chelating) wash in about every eighth wash to lift the light mineral film before it dulls shine. Nothing else needs to change.
Climate, from recent records (Open-Meteo, ERA5 2015-2024): June is the warmest month, averaging 31°C by day, and humidity peaks in November at about 91% 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 C and F. Supply: 230 V, 50 Hz.
A 120 V only dryer or styler (North American) will burn out on this supply, and a plug adapter does not change voltage. Check the label for dual voltage (100-240 V) before you plug in.
Plug, voltage and frequency: IEC World Plugs and national standards.
Plan Medan 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.