When your child gets a boo-boo, the last thing on your mind should be what's inside the thing you're pressing against their skin. Yet for most cooling products, gel packs, menthol-based solutions, and fever strips alike, that's actually worth thinking about.
Here's what you need to know.
What's inside a typical gel pack?
Gel packs are a common go-to for bumps and bruises, but their contents are more complicated than they look. The most common ingredients include propylene glycol, sodium polyacrylate, and various chemical additives depending on the type.
The most concerning type is the instant gel pack, found in many first aid kits. These contain chemical reactors like ammonium nitrate or urea. Of these, ammonium nitrate is the most toxic if swallowed, and can cause dilation of blood vessels, lowered blood pressure, and conditions affecting the oxygen-carrying ability of red blood cells.
Reusable gel packs carry their own concerns. With large ingestions of propylene glycol, it is possible to develop symptoms similar to alcohol intoxication, including severe drowsiness, unresponsiveness, and slowed breathing.
Most manufacturers label their products "non-toxic," and in small amounts that's generally true. But even products labeled non-toxic should not be ingested. With curious kids around, a leaking or punctured pack is a real scenario worth considering. Beyond ingestion, gel packs also aren't safe for open wounds or broken skin. The chemical compounds they contain can irritate damaged tissue, which is precisely the kind of skin a boo-boo often involves.
What about menthol?
Menthol-based cooling products are popular and widely trusted, and they're not dangerous for most adults in normal use. But for young children, there are real limitations parents should know about.
First, menthol doesn't actually cool anything. It works by activating cold-sensitive nerve receptors in the skin, creating the sensation of cold without any real change in temperature. For a boo-boo with heat or mild swelling, that's comfort without any physical effect.
Second, menthol is not safe for open wounds, burns, or broken skin. It causes a stinging, burning sensation on damaged tissue, which is the opposite of what you want when a child is already crying. Most menthol products carry explicit warnings against use on broken or irritated skin for exactly this reason.
Third, there's the smell. Adults tend to find menthol's scent familiar and pleasant, but children have a significantly stronger sense of smell and are far more sensitive to intense aromas. More importantly, research published in Chest found that menthol can stimulate mucus production and airway inflammation, which can have severe effects on breathing in infants and young children because of the small size of their airways. This is why many pediatricians recommend avoiding menthol-based products on young children and infants entirely.
What about fever strips?
Cooling fever strips — the adhesive patches applied to a child's forehead, work on a similar principle to menthol but through a different mechanism. When applied, water in the hydrogel evaporates, cooling the skin and triggering a signal to the brain to decrease the sensation of pain. They do not lower the body's overall temperature. They only affect the skin surface where applied, and their ability to reduce fever is very limited. They're a comfort measure, not a treatment.
They also come with their own chemical concerns. They contain hydrogel polymers and additives, and should not be applied to broken, inflamed, or sensitive skin. Some fever strips also contain menthol, carrying with them all the same respiratory concerns mentioned above.
BooBoo Cooler® works differently. The cooling isn't a sensation created by evaporation or nerve stimulation. It's physical. The water actually absorbs heat from the skin and brings the surface temperature down at the site of the injury, right where it matters.
BooBoo Cooler®: just water
BooBoo Cooler® contains one ingredient: pure, sterile water. No propylene glycol, no ammonium nitrate, no gelling agents, no dye, no fragrance. Nothing that could irritate sensitive skin, and nothing that poses any concern if it comes in contact with a wound.
That last point is important. Because BooBoo Cooler® is sterile and contains only water, it is completely safe on open wounds and broken skin, something gel packs, menthol products, and fever strips cannot claim. For a child's boo-boo, which is often a scrape or cut rather than just a bruise, that makes a real difference.
The bottom line
Menthol products, fever strips, and gel packs all come with chemicals, warnings, and limitations and none of them are safe on open wounds or broken skin.
BooBoo Cooler® has none of that. Just pure, sterile water that actually brings the temperature of the boo-boo down. Nothing to read the label twice about, nothing to worry about. Just water.