Why Australian Hair Has a Unique Problem
Sydney in February. Brisbane in January. Darwin, essentially always. Australian coastal summers combine high temperature with high relative humidity in a way that is among the most challenging atmospheric conditions a head of hair can encounter. If you have lived in a drier climate and moved to coastal Australia, you already know this: the humidity that felt manageable before now feels like your hair's personal nemesis. Products that worked before have stopped working. Frizz that was minor has become unmanageable.
This is not a coincidence or a sensitivity. It is a physics and chemistry problem — and there are things that genuinely help.
What Humidity Does to Your Hair
Hair is hygroscopic — it naturally absorbs and releases water from its environment. The rate at which it does so depends on two factors: the atmospheric humidity it is exposed to, and the internal moisture balance of the strand itself. When atmospheric humidity is high and the hair's internal moisture levels are low — a mismatch extremely common in women using conventional haircare systems — the hair shaft draws moisture from the air aggressively. This rapid, uncontrolled moisture uptake causes the hydrogen bonds within the hair's cortex to rearrange, changing the physical shape of the curl and causing the cuticle scales to lift and expand. The result is frizz.
In an 80 percent humidity environment — a typical summer day in coastal Australia — a moisture-depleted strand becomes completely unmanageable. This is why imported haircare products developed for Northern European or North American climates, where summer humidity peaks around 40 to 60 percent, often fail completely in Australian conditions.
Why Most Products Fail in the Australian Climate
The majority of global haircare products are designed and tested in temperate climates with moderate humidity. Their anti-frizz formulations are calibrated to perform under conditions that Australian coastal summers far exceed. Silicone-based products, in particular, struggle in high humidity because the silicone film is overwhelmed by the sheer volume of moisture in the air. Additionally, high temperature softens silicone films, further reducing their effectiveness at exactly the moment you need them most.
The Climate-Appropriate Solution
Fighting Australian humidity requires a different strategy: rather than applying a product barrier on top of the hair shaft, you need to equalise the moisture differential between the strand and the atmosphere. When the hair is internally well-hydrated, the humidity difference between it and the atmosphere is small. There is no moisture gradient driving the absorption. The cuticle remains flat not because it is being held down, but because it has no reason to lift.
Aloe vera is a humectant: it helps the strand hold onto water. Coconut's lauric acid is one of the few oil components shown to penetrate the hair shaft, and a well-conditioned strand with a smooth cuticle takes up humid air more slowly. Long and Strong is made in Australia, for Australian summers: a three-step shampoo, conditioner and leave-in Coco Aloe Mist with no silicones, so there is no coating to soften in the heat and nothing to build up. Well-conditioned hair stays noticeably smoother, softer and shinier when the air turns heavy. 4.8★ · 1,100+ reviews across the range.
Get smoother hair through summer with Long and Strong
References
• International Journal of Cosmetic Science, Vol. 41 (2019): Atmospheric humidity and hair shaft moisture exchange
• Journal of Cosmetic Science, Vol. 54 (2003): Climate-specific formulation considerations in haircare
