Ole Henriksen B5 Boost Hydrating Solid Foaming Gentle Cleanser Review

Read the label before the marketing. The B5 Boost cleanser calls itself a solid foaming cleanser and the eye expects either a soap bar or a cleansing balm, but the first ingredient is glycerin, ahead of water, and that changes what the product is. A soap bar is fatty-acid salts. A cleansing balm is oils and waxes. This is a humectant held solid by sodium cocoyl isethionate, the syndet surfactant that made the original mild beauty bar possible, and by silica and a little coconut acid, with the water content low enough that the whole thing holds its shape in a jar. Wet it and it foams like a gel; rinse it and it leaves glycerin behind like a cream. That is a neat trick, and Ole Henriksen, a spa brand that has spent four decades on fruity gels and jellies, launched it in mid-2026 as the front of a turn toward barrier-first products with a Scandinavian berry story.

The rest of the list supports the trick well. Lauryl betaine and coconut acid round out the surfactant system and thicken the lather. Elderberry juice, panthenol at seventh position, and three cold-climate seed oils, blackcurrant, elderberry and lingonberry, sit in the top ten with vitamin E, giving the foam a slip and the skin a soft after-feel. Fructooligosaccharides and a radish-root ferment are the brand's prebiotic and preservative gestures, kaolin tints the bar pink and lends a faint oil-absorbing note, and a cluster of botanical extracts, hollyhock, chlorella, soy and cynanchum, sit low enough to be decoration. Then the flaw: parfum, bitter orange, bergamot and lemon peel oils, with limonene and pinene declared, at the tail of a product whose name includes the word gentle. Everything about the surfactant chemistry says sensitive skin; everything about the fragrance says otherwise.

The claim that matters is hydration after washing, and the chemistry backs it more convincingly than the brand's one-week panel does. Isethionate syndets have decades of clinical data showing far less protein binding and lipid stripping than soaps and sulfates, and cleansers that deposit humectants during the wash are the established route to skin that feels comfortable rather than tight afterwards. A solid that is mostly glycerin does that deposition more aggressively than any gel can, because there is no water diluting the humectant on the way in. Ole Henriksen's thirty-eight-person panel reported that nearly everyone had more hydrated skin immediately after use, which is the right claim for this format and a modest one; the honest translation is that dry skin will feel cushioned straight out of the sink, and that the effect resets every wash rather than accumulating.

In use it is quick and slightly theatrical. A fingernail-sized scoop, taken with the supplied spatula from a firm, bouncy pink bar, softens the moment wet fingers touch it and whips into a dense whipped-cream foam in a few seconds. It smells of citrus, brightly and briefly, and it removes sunscreen, sweat and light makeup in one pass while leaving long-wear foundation and waterproof mascara to a cleansing oil. The rinse is the point: skin that feels soft, plump and un-tight, with a lingering slip from the glycerin and berry oils that dry skin reads as comfort and oily skin may read as a film. On a reactive face the citrus oils can announce themselves as a faint sting in the first week, and anyone with rosacea, eczema or a fragrance allergy should treat the word gentle on the label as aspirational.

The practical limits are those of the format. The jar has to stay dry and the lid tight, or a steamy bathroom turns the bar soft and gloopy at the top; the spatula is easy to lose and fussy to use half-asleep. Oily skin in summer may want something that rinses cleaner. There is no active, so the cleanser does nothing for breakouts, pigment or texture beyond being kind. And the record is thin: seven reviews on the brand's site and a first trickle at Sephora and Ulta, all from the first few months, with a panel that measured one week. The assessment leans on the label and on cleansing science rather than on the product's own history.

Thirty-six dollars is spa pricing, but the format does most of the arguing. A solid concentrate with no water to squeeze out lasts four to five months at twice-daily use, roughly double a 150 millilitre gel, so the per-wash cost lands near that of a mid-priced drugstore cream cleanser. Whether the berry oils and the pink clay are worth the rest is a matter of taste; what the money reliably buys is a mild, hydrating surfactant system in a format that travels well and lasts.

This is the cleanser for dry, normal and dehydrated skin that comes out of foaming gels tight, for anyone on a retinoid who wants a wash that gives something back, and for people who simply like the ritual of a solid. It is not for reactive, fragrance-sensitive or fungal-acne-prone skin, however gentle the label says it is, and not for oily faces that want a squeaky rinse. Taken for what the ingredient list says it is, a glycerin bar that foams, it is one of the more thoughtful cleansers the brand has made.