5 Habits That Are Secretly Wrecking Your Hair

You’re standing in front of the bathroom mirror, holding a fresh clump of strands from your brush and wondering, “What am I doing wrong with my hair?” You’ve already made the big changes—you’re eating your greens, you’ve swapped to a silk pillowcase, and you’ve finally stopped washing your hair every single day. Yet, the split ends keep climbing, and that healthy bounce seems to have stayed behind in last season.

The truth is, hair damage isn’t always a one-time catastrophe like a bleach job gone wrong. It’s usually a slow burn. It’s the result of tiny, repetitive habits that damage your hair so subtly that you don’t even notice the toll until the dullness sets in. Let’s break down five of the most overlooked offenders and how to swap them for a more intentional, hair-first routine.

1. “Cooking” Your Dry Shampoo and Hairspray

We live in an age of dry shampoo and high-hold sprays—essential for longevity, but potentially lethal for re-styling. A major mistake is taking a hot iron directly to hair that is already coated in three days’ worth of product. When you do this, you are essentially thermally fusing those chemical residues into the hair cuticle, creating a stubborn, abrasive layer.

This makes the hair feel crunchy and incredibly difficult to brush. It’s best to wash your hair before styling with heat. Also, always brush your hair thoroughly with a tool like the Veaudry myDetangler Pro before you apply fresh heat. It can help lift away surface debris and separate strands so the heat can distribute evenly rather than searing through layers of hairspray.

2. Treating 230°C Like Your Default Setting

There’s a common assumption that the hotter the iron, the faster the style. In reality, that’s a direct ticket to “bubble hair”—a condition where the moisture inside the hair shaft boils, creating permanent blisters on the strand. 

If you’ve ever wondered what is bad for your hair, using a tool that only has an on/off switch is at the top of the list. Your hair type should dictate the temperature, not the tool’s maximum capacity. Fine or chemically treated hair doesn’t need 230°C; it needs a gentle touch. This is why we are so obsessed with heat-adjustability. With a Veaudry mySTYLER, you can dial the heat down to 170°C for a sleek finish that preserves your hair’s internal proteins. The goal is to style the hair in one clean, controlled pass. Since our hair irons have Tourmaline-infused plates, you’re also utilising negative ions to seal the cuticle, locking moisture in rather than stripping it out.

3. Rushing the Set Before the Hair is Cold

Think about how a professional stylist works: they curl a section and then hold it in their palm for a few seconds before letting it go. Most of us at home do the opposite—we curl a section and immediately run our fingers through it while it’s still piping hot. This is a missed opportunity for hair health and style longevity.

When it’s warm, hair can be moulded. But it only stays in that shape once it has cooled down. By disturbing the hair while it’s still hot, you’re forcing the cuticle to stay open and the style to drop, which usually leads to you reaching for the iron again an hour later. This cycle of restyling is one of the most repetitive bad hair habits. Instead, let your curls sit until they are cold to the touch. This locks the shape in, meaning you use less heat over the course of the week.

4. “Deep-Frying” Your Ends with Heavy Oils

Oiling your hair before straightening provides a protective barrier, but only if you use the right product. Applying heavy oils—especially those not specifically formulated as heat protectants—directly before using a flat iron is a bit like putting oil in a frying pan. It raises the temperature of the hair surface far beyond what is safe.

If you’re frustrated by hair breakage despite using expensive oils, check your timing. Natural oils like coconut or argan should be used as pre-wash treatments or post-styling finishes. For the actual styling process, only use lightweight, professional-grade heat protectants. Save the nourishing oils for after you’ve turned off your mySTYLER to add that final touch of gloss to your ends.

5. Styling with a Dirty Styler or Clogged Dryer

When was the last time you cleaned your hair curler or straightener? Over time, hair products, natural oils, and dust build up on the plates of your irons and in the filters of your dryers. This buildup causes uneven heat distribution and, worse, “drag.” If your iron feels like it’s snagging or pulling, it might not be your hair—it might be the residue on the plates.

Snagging leads to mechanical breakage that thins out your ends over time. To fix this, ensure your tools are cold and unplugged, then gently wipe the plates with a damp, soft cloth. Similarly, checking the filter on your myDryer ensures the motor doesn’t overheat, providing a consistent airflow that won’t parch your strands.

The Bottom Line

Achieving that salon-grade glow is often about being a little more mindful of your rituals. It’s about realising that what is bad for your hair is often just a lack of the right technique or a misunderstood habit. By swapping out these subtle bad hair habits for intentional care, you’ll stop wondering what’s going wrong and start seeing the results you’ve been working for.