The ultimate guide to shampoo bars: Everything you need to know before making the switch
Are you thinking about reducing plastic in your bathroom, or are you simply curious about how solid shampoo actually works? Shampoo bars have quickly gone from being an environmental trend to becoming an obvious part of a modern, conscious hair-care routine.
A shampoo bar is a concentrated, solid shampoo in solid form, completely free from water and plastic packaging. It works just like regular liquid shampoo—it lathers, cleanses, and nourishes—but is more economical, eco-friendly, and gentle on both your hair and our planet.
In this ultimate guide from us at FOAM Accessories, we cover everything you need to know to take the step toward a greener, healthier hair-care routine.
How does a shampoo bar actually work?
The biggest difference between a shampoo bar and traditional shampoo is water. Regular bottled liquid shampoo often consists of up to 80% water. This means you pay for water, transport water, and need a plastic bottle to store it in.
Our shampoo bars at FOAM are fully concentrated with active, natural ingredients and nourishing oils. When the bar comes into contact with water in the shower, it activates immediately and creates a rich, creamy lather.
4 reasons to switch to solid shampoo
Why should you choose a hair bar over a plastic bottle? Here are the four biggest benefits:
- Plastic-Free & Eco-Friendly: You completely avoid unnecessary plastic bottles that risk ending up in nature. Our products are kind to both you and the environment.
- Economical (Lasts twice as long): Because a shampoo bar is so concentrated, a single bar is roughly equivalent to 2–3 regular plastic shampoo bottles (depending on how long your hair is).
- Travel-friendly: No spills in your bag and no problems at airport security because it is completely solid. It is the ultimate travel companion.
- Gentler on the scalp: Natural shampoo bars are often free from harsh, drying sulfates (such as SLS) and synthetic silicones that weigh hair down.
Comparison: Shampoo bar vs. Liquid shampoo
| Feature | FOAM Shampoo bar | Traditional liquid shampoo |
|---|---|---|
| Packaging | 100% plastic-free / biodegradable | Plastic bottle |
| Main ingredient | Nourishing oils & natural ingredients | Water (up to 80%) & chemicals |
| Lifespan | Equivalent to approximately 2–3 plastic bottles | Runs out faster (easy to overuse) |
| Sulfates & Silicones | No, gentle on the scalp | Often yes, can dry out and irritate |
How do you choose the right Shampoo bar for your hair type?
Every head of hair is unique, and just as with regular hair care, you need to choose a bar that suits your specific needs.
- For dry and frizzy hair: We developed Forest Treat shampoo bar to provide deep hydration and repair.
- For oily scalps: Choose our Shampoo bar with balancing ingredients such as clay or nourishing blackcurrant oil.
- For a sensitive and itchy scalp: Choose a completely fragrance-free option with naturally soothing ingredients.
Frequently asked questions about shampoo bars (FAQ)
What is the best way to use a shampoo bar?
Wet your hair thoroughly. Rub the bar between your wet hands to create a lather, or gently glide the bar directly over your hair from roots to ends. Massage it into your scalp so that it lathers well, then rinse thoroughly.
Does hair become greasy at first when switching?
Yes, it is common for hair to go through a transition period. This is because the scalp is cleansed of old silicones and needs to rebalance its own oil production. This will pass within a couple of weeks. Read our in-depth guide on how to get through the transition period here.
How should you store the bar in the shower?
The absolute most important thing is to let the bar dry completely between washes. Place it on a soap dish with good drainage or in a dry spot away from the shower stream. Here you'll find our 5 best tips for optimal storage and maximum lifespan.
Ready to upgrade your hair care?
Switching to a shampoo bar is a small step for you, but a big step for the environment – and your hair will thank you for avoiding harsh chemicals.
At FOAM Accessories, you'll find carefully formulated shampoo and conditioner bars that give your hair the care and shine it deserves. Explore our full range of natural hair bars here and find your new favorite!
Would you like to know more about why we have chosen to avoid harsh chemicals? Read our in-depth article about the benefits of sulfate-free shampoo here.