McKee’s 37 Hydro Blue vs Tough As Shell – Which Ceramic Spray Is Better?
If you’re looking for ceramic protection that’s fast and easy, two popular options are McKee’s 37 Hydro Blue and Tough As Shell from Jimbo’s Detailing. But while both promise shine and hydrophobicity, the way they work—and the results they deliver—are very different. Let’s break it down.
What Is McKee’s 37 Hydro Blue?
Hydro Blue is a rinse-on ceramic coating. You spray it on a wet car, then rinse it off to activate the protection. It’s fast, flashy, and produces impressive water beading almost immediately.
- SiO2-based ceramic protection
- Rinse-on formula (spray and immediately pressure rinse)
- Designed for use on wet surfaces
It’s a favorite among weekend warriors who want a quick layer of shine—but results vary depending on application technique, water pressure, and surface prep.
What Is Tough As Shell?
Tough As Shell is a spray-on, wipe-off ceramic spray designed to offer real protection with minimal effort. It doesn’t require a pressure washer or special conditions—and it bonds to more surfaces than Hydro Blue.
- Safe for paint, trim, glass, PPF, and wheels
- No hazing or cure time—wipe on, wipe off
- 3+ months durability per layer
- Layerable for even better performance
It’s used by pros and DIYers alike for its speed, versatility, and consistent results.
Head-to-Head Comparison
| Feature | McKee’s Hydro Blue | Tough As Shell |
|---|---|---|
| Application Type | Rinse-on (spray then pressure rinse) | Spray on, wipe off (no water needed) |
| Durability | 1–2 months (reported) | 3+ months per layer |
| Surface Compatibility | Paint only (wet) | Paint, trim, glass, wheels, PPF (dry or damp) |
| Ease of Use | Fast, but requires water pressure | Simple spray/wipe process |
| Layering | Not ideal | Yes—layerable for more durability |
Real-World Performance
Hydro Blue is quick—but sensitive. It can streak if not rinsed fast enough, and it doesn’t bond well to trim or glass. For many users, it fades after a few washes.
Tough As Shell is more forgiving and longer-lasting. It bonds better, works on more surfaces, and doesn’t rely on pressure washers or exact conditions.
Final Verdict
If you love playing with rinse-on products and have the perfect setup, Hydro Blue is fun. But if you want real ceramic protection you can count on, Tough As Shell wins in durability, ease, and versatility.
Get Tough As Shell Here – or order from Amazon.
