Itchy skin, red patches, or dryness after a soak? You might be dealing with chlorine rash, a common reaction caused by overexposure to chlorine in spa water. While chlorine is widely used for sanitisation, it’s not always the most comfortable option—especially for sensitive skin.

At The Spa Shop, we offer chlorine-free alternatives that are effective, skin-friendly, and easy to maintain. Whether you're looking to switch from chlorine or setting up a new spa, here are some great options to consider.

What Is Chlorine Rash?

Chlorine rash is a form of irritant contact dermatitis. It occurs when chlorine strips your skin of its natural oils, leaving it dry, itchy, and inflamed. Spa users often experience symptoms such as:

• Red, blotchy skin

• Itching or burning sensations

• Dryness or flaking

• Small bumps or hives

Chlorine rash is more likely to occur in warm water, where your pores open up and absorb more of what’s in the water—including chemicals.

Chlorine-Free Spa Water Options

There’s good news: you don’t have to stick with chlorine. These gentler alternatives will keep your spa water clean and inviting—without the irritation.

FreshWater® Salt System

Perfect for HotSpring® spa owners, the FreshWater® Salt System generates sanitiser from natural salt—only when needed. This means lower chlorine levels and softer water, with less smell and fewer harsh effects on your skin.

Benefits include:

• Silky-soft water feel

• Fewer chemical top-ups

• Easy cartridge replacement every 4 months

Note: Not all HotSpring spas are compatible with salt systems. Check with us to see if your spa model supports this upgrade.

BioGuard® Symmetry

Bromine is a reliable sanitiser that’s less irritating than chlorine, especially in warm water. BioGuard® Symmetry offers a complete bromine system with automatic dosing and clear water results.

Why choose bromine?

• Ideal for spas due to stability at high temps

• Less noticeable smell than chlorine

• Softer on skin and eyes

• Compatible with most spas

You’ll still need to shock the water weekly with a chlorine-free oxidiser like CW O2 Shock to remove waste and keep sanitiser levels effective.

FreshWater® Mineral Spa Sanitiser (Silver Ion System)

Silver ions provide natural antibacterial properties, helping to reduce the amount of sanitiser needed. The FreshWater® Mineral Sanitiser slowly releases silver into the spa water, making it a great chlorine-free option when paired with a non-chlorine oxidiser.

Benefits of the silver ion system:

• Low-maintenance cartridge lasts 4 months

• Natural antibacterial action

• No strong chemical smell

• Pairs well with weekly non-chlorine shocks

Important: Silver ion systems are not suitable for all spas. Be sure to confirm compatibility before switching.

Don’t Forget the Shock Treatment

Regardless of the sanitising system you choose, regular shocking is essential. A weekly dose of CW O2 Shock—a powerful, chlorine-free oxidiser—breaks down body oils, lotions, and organic contaminants that build up in spa water.

Tips for Healthier, Rash-Free Spa Soaks

• Rinse before and after using your spa

• Keep soak time under 30 minutes

• Maintain correct water balance (pH, alkalinity, sanitiser)

• Use a moisturiser after spa use

• Switch to a gentler sanitising system if irritation continues

Final Thoughts

Chlorine rash doesn’t have to come with spa ownership. Whether you’re upgrading your existing spa or choosing a system for a new one, The Spa Shop has chlorine-free solutions to help you enjoy clear, comfortable water year-round.

Come chat with our team to find the right system for your spa—whether it’s salt, bromine, or silver ion.