Aquaphilus Dolomiae Extract: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
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All information on this page is verified using publicly available nomenclature standards and reference materials from The Personal Care Products Council (PCPC) and the European Commission's CosIng database. Our analyses are based on technical data from these sources to ensure accuracy and reliability.

What Is Aquaphilus Dolomiae Extract?

Aquaphilus Dolomiae Extract comes from a unique water dwelling bacterium called Aquaphilus dolomiae, first discovered in deep thermal springs in the French Pyrenees. This microbe survives extreme conditions by producing soothing bio-molecules that help protect its own cell walls. When scientists noticed locals using the spring water to calm irritated skin, research teams isolated the bacterium and developed a gentle extraction process that captures its beneficial sugars, amino acids and lipids.

To make the cosmetic grade ingredient, the bacteria are grown in controlled, sterile tanks filled with mineral-rich water. After reaching optimal density, the culture is filtered to remove the cells, then the remaining liquid is purified, concentrated and dried into a stable powder or kept as a liquid concentrate. No harsh solvents are involved, keeping the extract suitable for sensitive skin formulas.

You will mainly find Aquaphilus Dolomiae Extract in calming creams, daily moisturizers, anti-aging serums, after-sun lotions, baby care products and targeted treatments for very dry or reactive skin. Because it plays well with common emollients and humectants, formulators often add it to masks and overnight balms that promise to strengthen the skin barrier.

Aquaphilus Dolomiae Extract’s Cosmetic Benefits/Uses

This ingredient brings two key actions to a formulation:

  • Skin Conditioning – Its naturally occurring sugars hold water on the surface of the skin, leaving it soft and smooth while amino acids nurture a healthy looking complexion.
  • Skin Protecting – The extract helps reinforce the skin’s natural barrier so it can better defend itself against dryness, pollution and daily irritants which in turn helps reduce visible signs of discomfort or redness.

Who Can Use Aquaphilus Dolomiae Extract

Aquaphilus Dolomiae Extract is gentle enough for most skin types including sensitive, dry, normal and combination skin. Its barrier supporting action can be particularly helpful for easily irritated or mature complexions. Oily or acne-prone users can also try it because the ingredient is lightweight and water based, though they may prefer formulas where it is paired with non-pore-clogging emollients to avoid a heavy feel.

The extract is produced from bacteria cultured in mineral water, with no animal derived substances involved, so it is suitable for both vegans and vegetarians.

Research to date shows no specific risks for pregnant or breastfeeding women when the extract is used topically. This is not medical advice and anyone who is pregnant or nursing should show the full ingredient list of any product to a healthcare professional for individual guidance.

Aquaphilus Dolomiae Extract does not make skin more sensitive to sunlight and can be used in both day and night routines. It also plays well with most common actives and moisturizers, making it easy to integrate into an existing regimen.

Potential Side Effects/Adverse Reactions

Side effects and reactions to the topical application of Aquaphilus Dolomiae Extract can vary from person to person. The points below describe potential outcomes, but they remain uncommon when the ingredient is formulated and used as directed.

  • Mild redness or warmth
  • Transient stinging on very compromised skin
  • Rare allergic contact dermatitis in individuals sensitive to bacterial proteins
  • Interaction with heavily exfoliated or broken skin that could heighten irritation

If any discomfort or unexpected reaction occurs stop using the product and consult a healthcare professional.

Comedogenic Rating

Rating: 0 / 5

Aquaphilus Dolomiae Extract is a water based ingredient rich in light sugars, amino acids and trace lipids that do not block pores. It is used at low levels in formulas and leaves no greasy film. Because it lacks heavy oils or waxes that can trap sebum, its chance of clogging follicles is extremely low.

This makes the extract suitable for skin that is prone to acne or frequent breakouts.

Keep in mind that the final product’s full blend of oils, silicones and thickeners will have a bigger effect on pore clogging than this single ingredient.

Summary

Aquaphilus Dolomiae Extract conditions and protects the skin by drawing in water with natural sugars and bolstering the barrier with soothing bio molecules. These actions can leave skin softer, calmer and more resilient to daily stress.

While not yet a household name it has gained steady interest among brands focused on sensitive skin care thanks to its thermal spring roots and gentle profile.

Current data shows it is safe for topical use with very low risk of irritation or pore blockage. As with any new product, perform a small patch test first to be on the safe side.

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