What the Bohr effect actually is — before we get to the myths
To debunk myths properly, you first need to know what you're talking about. Christian Bohr was a Danish physiologist who, in 1904, described the relationship between carbon dioxide levels in the blood and haemoglobin's ability to release oxygen to tissues. In simple terms: the more CO₂ builds up in tissue, the more readily haemoglobin lets go of oxygen and delivers it where it's needed. This is a purely internal mechanism — it happens in the blood, inside blood vessels, with no external input at all.
OxyGeneo uses this principle as follows: the device's handpiece applies a capsule to the skin, which reacts with a gel to produce CO₂ bubbles. The skin "senses" a sudden rise in carbon dioxide at its surface and — in line with the Bohr effect — the blood vessels beneath it respond by delivering more oxygen from the blood to the tissue. Not from outside. From your own blood, through your own vessels. That's exactly what makes the mechanism genuine. And it's also where most of the confusion begins.
Five myths — one by one
Myth 1: "We oxygenate the skin from the outside — oxygen goes in through the pores like gas filling a balloon." This is the most common oversimplification, and the biggest misunderstanding. The Bohr effect isn't about pumping oxygen in from outside. The mechanism works the other way round: CO₂ produced by the capsule reaches the skin and signals to the blood vessels beneath it that tissue needs more oxygen — and those vessels respond by increasing local delivery from the blood. The oxygen that reaches the cells comes from haemoglobin, not from the air or from any bottle. It's a subtle but fundamental difference.
Myth 2: "It's the same as oxygen in a tube — like creams with active oxygen." Cosmetic products with "active oxygen" work by delivering an oxidised substance directly to the skin's surface — a different chemical mechanism, working at a different depth and over a different timeframe. The Bohr effect in Geneo is a physiological vascular response that occurs inside the skin. Comparing the two is like comparing a neck massage with a painkiller pressed to your forehead — both might help a headache, but for different reasons and in different ways.
Myth 3: "The Bohr effect in cosmetology is a marketing invention — the phenomenon doesn't exist." The phenomenon exists — it's described in over a hundred years of physiology and underpins sports medicine, anaesthesiology and intensive care. The question isn't whether the Bohr effect is real, but how strongly and how deeply it acts when applied in a cosmetology context. And here the honest answer is: this is an area of active research. Available data point to improved microcirculation and tissue oxygenation after a Geneo treatment, but the scale of that effect depends on individual skin biology, its condition and the number of sessions. There's no guarantee of a specific outcome here — there's a mechanism with a genuine, but variable, effect.
Myth 4: "One Geneo session replaces a full course — results are visible immediately and last forever." The improvement in skin tone, smoothness and radiance that many people notice after their first session mainly comes from a temporary boost in microcirculation and oxygenation, plus a cleansing and hydrating effect. That's real — but short-lived. Longer-term results, such as improved skin texture, deeper stimulation of collagen synthesis, or more even pigmentation, may appear after a series of sessions, not after a single visit. This is true of almost every beauty treatment, really — skin doesn't "repair itself" in an hour.
Myth 5: "Geneo is for everyone — it's gentle, so it's safe for anyone." Geneo is indeed considered a gentle, well-tolerated treatment with no clear healing period. But "gentle" doesn't mean "no contraindications". Active inflammatory conditions, reactive skin, allergy to product ingredients, certain vascular conditions, pregnancy, active skin infection — these are situations where the treatment may not be suitable, or may need to be modified. Every good cosmetologist takes a history before the treatment precisely because "gentle" is not the same as "for everyone, no exceptions".
What Geneo actually does to your skin
Let's set the Bohr effect aside for a moment and look at what else happens during a Geneo treatment, alongside the CO₂ mechanism. The device's handpiece also performs a gentle oxygenating peel — it exfoliates dead skin cells and prepares the skin for deeper penetration of active ingredients from the gel. Depending on the protocol chosen, these ingredients may hydrate, brighten, work against ageing, or target acne. On top of that comes the vascular massage effect and the physical boost to microcirculation delivered by the handpiece itself.
In other words: even if someone wanted to question the scale of the Bohr effect in a cosmetology context, the treatment's other components stand on their own, independent merits. Cleansing, hydration, microcirculation stimulation and the delivery of active ingredients are four things that bring a noticeable effect for many people — regardless of how deeply anyone is convinced by the CO₂ mechanism.
Who Geneo is genuinely a good choice for
The question of who benefits from Geneo the most matters more than settling the debate about mechanism. The treatment has a specific profile — and it's worth knowing before you book.
Geneo works particularly well for skin that looks tired, grey or lacking in radiance — whether that's down to stress, lack of sleep, urban pollution or the natural changes that come with age. For some clients, skin already looks brighter and more "alive" after just one session. The treatment is also often chosen as preparation before an important event — a wedding, a photoshoot, a conference — when what matters is a quick refreshing effect without the redness or flaking that stronger peels can bring.
Geneo can also be a valuable part of complementary treatment plans. As a microcirculation stimulant and cleansing step, it pairs well with treatments that work more deeply — mesotherapy, biostimulators or PRP. It doesn't replace them, but it can strengthen the environment they work in: better-oxygenated, cleansed and hydrated skin responds more fully to active ingredients. That's why Geneo shows up both as a standalone series and as part of a more comprehensive protocol.
It's also worth saying plainly when Geneo probably isn't the best choice. If your main concern is deep static wrinkles, significant volume loss or advanced hyperpigmentation, Geneo may improve them slightly, but it won't be the right tool to address them properly. In these cases, a conversation about mesotherapy, biostimulators or laser methods will do a better job of matching your expectations to what's actually achievable.
Gender is straightforward when it comes to Geneo: the treatment tolerates thicker, oilier skin well, the kind typically seen in men, and the cleansing and microcirculation benefits are often even more visible on men than on women — precisely because their skin is denser and less consistently cared for. Men trying Geneo for the first time are often surprised by how clear the before-and-after difference is. This isn't "a treatment for women" — it's physiology, and physiology doesn't know gender.
Putting it all together into a sensible decision
The Bohr effect is a real physiological phenomenon, and Geneo has a genuine mechanism of action. But between "the mechanism exists" and "this treatment will change your skin in exactly the way the advert promises" lies a gap that an honest specialist should fill with a consultation, not with guarantees. A well-chosen treatment is one that answers the specific needs of specific skin — not one that simply sounds best in a description.
If your skin looks tired, needs cleansing and refreshing, and you're after something with no healing period — Geneo could well be what you're looking for. If your skincare needs go deeper, it's worth discussing combining it with a more targeted protocol. The answer to that question isn't online — it's at your consultation, where a specialist sees your skin and listens to what you're hoping for.
