The hyaluronic molecules in OoxaO™ are
500x smaller than those in standard lubricants.
 This is to fill in microscopic gaps between skin to increase the efficacy and duration of lubrication by nanoscale emulsion.
  • SINGAPORE (SGD)
OoxaO 40 ml bottle with the cap open and a drop of lubricant

engineered to mimic the body's own balance.

the formulation premise

OoxaO is not a lubricant with added ingredients. The science is the product. Three formulation principles in one water-based formula.

285–295
mOsm/kg · iso-osmolar
10,000D
low-molecular HA
pH 4.5
postbiotic care
Formulation Dr. Kenji Murakami Mucosal tissue · Osmotic balance · Body-compatible care
01 Osmolality

balanced for both bodies.

Formulated at 285–295 mOsm/kg — within the body's own fluid range, so the glide feels balanced for both partners.

Line drawing of the OoxaO 40 ml bottle
Osmolality Comparison · mOsm/kg
200 400 600 800 1000+ Vaginal secretions ~260–290 Semen ~250–380 OoxaO 285–295 WHO IDEAL ≤380 Typical commercial ~600–2000+

OoxaO sits inside the body's natural range, far below the WHO-recommended level of 380.

79%* fertility-conscious compatibility
What is Osmolality

How concentrated a fluid is — high-osmolality formulas can draw moisture from delicate tissue.

02 Hydro-WetLock™

long-lasting moisture that feels like skin.

10,000D sodium hyaluronate — a low-molecular-weight HA, around 500× smaller than standard lubricant molecules.

Clear OoxaO gel flowing over a 40 ml bottle
213%* higher moisture retention
What is Hyaluronic Acid

A water-binding molecule — the smaller form keeps the glide light, not gel-heavy.

HA Molecule Size · Relative Scale
STANDARD HA ~5,000,000 D 500× SMALLER OoxaO HA 10,000 D

10,000D HA — 500× smaller HA molecules fill microscopic gaps between skin surfaces, creating a hydrated slip layer without the heavy gel feel.

03 pH 4.5 · Postbiotic
Hand holding an OoxaO 40 ml bottle
pH Scale · Vaginal Environment
pH 0 3.5 4.5 7 14 NATURAL RANGE 3.8–4.5 OoxaO pH 4.5 ACIDIC ALKALINE NEUTRAL

The vaginal environment is naturally mildly acidic (pH 3.8–4.5). OoxaO's pH 4.5 aligns precisely.

care that continues long after intimacy.

Formulated at pH 4.5 with Lactobacillus Ferment Lysate — an active postbiotic supporting microbiome-conscious care in a stable, leave-on format.

pH-aligned. Postbiotic-supported. No-wash-off leave-on care.

  • 01. 77%* reduction in itchiness
  • 02. +57%* beneficial Lactobacilli count
  • 03. −21%* decrease in BV-associated bacteria

real couples. real comfort. real pleasure.

OoxaO's science story is supported by internal product data across moisture retention and intimate microbiome comfort.

0%*

of customers reported no painful sexual intercourse.

0%*

of users felt improved satisfaction during intimacy.

0%*

of couples reported an enhanced sexual experience.

everything you need. nothing you don't.

Clean Formula

Nothing that works against you.

OoxaO avoids the choices that make lubricants sticky, hyperosmolar, or biologically mismatched.

No glycerin. No parabens. No alcohol. No propylene glycol. No artificial fragrance. No hormone-disrupting agents.
Compatibility

Made for every moment.

Engineered to work seamlessly with the products and bodies that matter most.

  • Latex-safe
  • Toy-safe
  • Water-based
  • Transparent
  • Fragrance-free
  • Flavorless
  • Non-greasy
  • No wash-off
Third-Party Tested

GMP-certified, independently verified.

Manufactured in a GMP-certified facility. Verified against the standards that matter most.

Arsenic · Cadmium · Mercury: Not Detected Lead: 0.0128 mg/kg Batch WDU2512 · Lab ID 25-314996-1

View Full Lab Report →

OoxaO 40 ml retail box, Active Postbiotic

our story.

Eleven years of innovation. From Osaka research to Kyoto refinement.

read our story →
OoxaO 40 ml bottle, tilted

shop OoxaO.

Bio-mimic glide. Clean aftercare. Feel everything, risk nothing.

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* Performance claims footnote.  Statistics marked with an asterisk: 79%, 213%, 98%, 95% and 88% are based on OoxaO internal product testing and brand-supported product data; methodology details available on request. 77%, 57% and 21% are from a published clinical study on postbiotic gels (PMC9936311), not OoxaO product testing. OoxaO is an intimate wellness product, not a medical treatment. pH and osmolality ranges referenced are formulation specifications. Vaginal pH and microbiome references cite published clinical literature and WHO/UNFPA guidance on personal lubricant specifications.