What Is Tetraselmis Suecica/Gold Chloride Hcl Lysate Extract?
Tetraselmis Suecica/Gold Chloride Hcl Lysate Extract is a skin care ingredient made from a blend of marine microalgae called Tetraselmis suecica and a tiny amount of gold chloride that has been treated with hydrochloric acid. The microalgae is rich in amino acids, vitamins and natural sugars, while gold ions are prized for their soothing and revitalizing feel on the skin. Researchers first noticed the algae’s ability to protect itself from harsh sea conditions, then paired it with gold salts in the early 2000s as part of the growing trend of “marine meets mineral” actives. To produce the extract, the algae is grown in clean seawater tanks, harvested, then gently broken open so its inner nutrients form a lysate. A controlled touch of gold chloride in an HCl solution is added, helping stabilize the mixture and improving skin affinity. After filtration the fluid is concentrated and preserved, ready to be blended into products. You will usually spot this extract in lightweight serums, anti-aging moisturizers, brightening masks, eye creams and after-sun treatments.
Tetraselmis Suecica/Gold Chloride Hcl Lysate Extract’s Cosmetic Benefits/Uses
This ingredient appears on labels as a skin conditioning agent, meaning it helps keep skin feeling soft, smooth and balanced.
Who Can Use Tetraselmis Suecica/Gold Chloride Hcl Lysate Extract
The extract’s light, water-based texture and non-oily finish make it compatible with most skin types, including oily, combination, normal and slightly dry skin. Its calming qualities are a plus for sensitive skin, though anyone with a known allergy to gold or marine algae should proceed cautiously. Extremely dry or compromised skin might need richer emollients in addition to this ingredient for adequate comfort.
Tetraselmis suecica is a plant-derived microalgae and the minute amount of gold chloride is mineral in origin, so the ingredient itself is suitable for both vegans and vegetarians. No animal-derived substances are involved in its standard production.
Current data shows no specific contraindications for pregnant or breastfeeding women, yet hormonal skin shifts can make reactions less predictable. This information is not medical advice and anyone who is pregnant or nursing should review new skincare products with a qualified healthcare provider to be safe.
The extract does not increase photosensitivity and can be used day or night. Because it is water soluble it layers well under sunscreen and makeup without pilling.
Potential Side Effects/Adverse Reactions
Responses to topical Tetraselmis Suecica/Gold Chloride Hcl Lysate Extract vary from person to person. The effects listed below are potential outcomes and are not expected for the average user when the ingredient is formulated and used correctly.
- Mild redness or tingling during initial uses
- Temporary dryness if used in very high concentrations without additional moisturizers
- Contact dermatitis in individuals allergic to gold salts or algae derivatives
- Stinging around compromised skin barriers such as open cuts or post-procedure areas
If irritation, persistent redness or any other unwanted reaction occurs discontinue use and consult a dermatologist or healthcare professional.
Comedogenic Rating
Rating: 1/5
Tetraselmis Suecica/Gold Chloride Hcl Lysate Extract is water soluble and leaves no oily residue, so it is unlikely to clog pores. The microalgae lysate contains mainly proteins, sugars and minerals while the trace gold chloride does not contribute any occlusive lipids. A rating of 1 rather than 0 is given because very sensitive or highly congested skin could react to any new bioactive, though reports of pore blockage are rare.
Suitable for acne-prone or breakout-prone skin in most cases.
Formulas that pair this extract with heavy plant oils or butters may have a higher overall comedogenic potential, so check the full ingredient list if congestion is a concern.
Summary
Tetraselmis Suecica/Gold Chloride Hcl Lysate Extract is a marine-mineral hybrid that conditions skin by delivering microalgae nutrients and a touch of soothing gold ions. It supports a smoother texture, helps maintain moisture balance and offers a calm refreshed feel thanks to amino acids, vitamins and natural antioxidants within the lysate.
While not yet a mainstream household name, it is gaining traction in niche serums and premium spa lines that focus on ocean-derived actives. Brands like it because it layers well, has a clean safety profile and adds a marketing story about algae and precious metals working together.
Current data and use levels show it to be low risk for irritation or pore clogging when formulated sensibly. As with any new skincare ingredient it is wise to perform a patch test before full-face application, especially if you have reactive or allergy-prone skin.