The most common reason people give up on refill shampoo is that it feels different in the first two or three weeks and they assume something is wrong. Usually nothing is wrong. The adjustment period is real, it's well-documented, and it passes. Here is what's actually happening and how to manage it.
Why your hair feels different at first ¶
Most supermarket shampoos use sodium lauryl sulphate or sodium laureth sulphate as the primary surfactant. These are very effective at stripping oil from the hair shaft, which is why your hair feels squeaky-clean after washing. The downside is that they strip too much, so your scalp compensates by producing more oil. When you switch to a sulphate-free formula, your scalp takes a few weeks to recalibrate its oil production. During that time, hair can feel heavier or greasier than usual.
What the adjustment period actually looks like ¶
For most people it's two to four weeks. The first week often feels fine. The second week is usually the hardest, when hair feels noticeably different and the temptation to go back is strongest. By week three or four, most people notice their hair needs washing less frequently than before, which is the scalp settling into a more balanced rhythm. Mara took three weeks to adjust and will tell you this honestly if you ask her in the shop.
Practical tips for getting through it ¶
Wash your hair slightly less frequently than usual during the adjustment period, even if it feels counterintuitive. Dry shampoo (or a small amount of bicarbonate of soda worked into the roots) can help on the days between washes. Make sure you're rinsing thoroughly, as sulphate-free formulas can leave a slight residue if not fully rinsed. And give it the full four weeks before deciding it's not for you.
When it's not an adjustment and something is actually wrong ¶
If your scalp is itching, red, or flaking in a way that feels like irritation rather than just oiliness, stop using the product and try a different formula. Some people are sensitive to specific ingredients, and that's not a failure of the refill concept, it's just a mismatch with a particular formula. We keep sample pots at the counter specifically so you can try a small amount before committing to a full fill.
If you're mid-adjustment and struggling, come in and talk to us. We can suggest a different formula or a conditioner that might help. The goal is for this to work for you, not just in theory.