Biossance Squalane + 10% Lactic Acid Resurfacing Night Serum Versus Tata Harper Resurfacing AHA + BHA Serum

Biossance Squalane + 10% Lactic Acid Resurfacing Night Serum Versus Tata Harper Resurfacing AHA + BHA Serum

This smoothing serum is formulated around Lactic Acid and Squalane to refine skin texture and brighten dull-looking skin.

This smoothing serum is formulated around Salix Alba Bark Extract and Lactic Acid to refine skin texture and brighten dull-looking skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Caprylic/Capric Triglyceride

Lactic Acid

Squalane

Glycerin

Sodium Hydroxide

Cetearyl Olivate

Propanediol

Sorbitan Olivate

Cetearyl Alcohol

Lespedeza Capitata Leaf/Stem Extract

Polyacrylate Crosspolymer-6

Acacia Senegal Gum

Sodium Gluconate

Xanthan Gum

Phenoxyethanol

Ethylhexylglycerin

Lavandula Angustifolia Oil

Linalool

Water, Caprylic/Capric Triglyceride, Lactic Acid, Squalane, Glycerin, Sodium Hydroxide, Cetearyl Olivate, Propanediol, Sorbitan Olivate, Cetearyl Alcohol, Lespedeza Capitata Leaf/Stem Extract, Polyacrylate Crosspolymer-6, Acacia Senegal Gum, Sodium Gluconate, Xanthan Gum, Phenoxyethanol, Ethylhexylglycerin, Lavandula Angustifolia Oil, Linalool

Hordeum Vulgare Leaf Juice

Silybum Marianum Ethyl Ester

Galactoarabinan

Salix Alba Bark Extract

Simmondsia Chinensis Seed Oil

Butter Glycerides

Isopropyl Shea Butterate

Lactobacillus Ferment

Leuconostoc Ferment Filtrate

Solanum Lycopersicum Fruit Extract

Vaccinium Myrtillus Fruit/Leaf Extract

Saccharum Officinarum Extract

Citrus Aurantium Dulcis Fruit Extract

Citrus Limon Fruit Extract

Acer Saccharum Extract

Citric Acid

Terminalia Ferdinandiana Fruit Extract

Lithospermum Erythrorhizon Root Extract

Hippophae Rhamnoides Oil

Plukenetia Volubilis Seed Oil

Saccharide Isomerate

Tasmannia Lanceolata Fruit/Leaf Extract

Arnica Montana Extract

Borago Officinalis Leaf Extract

Calendula Officinalis Flower Extract

Medicago Sativa Extract

Spiraea Ulmaria Extract

Sambucus Nigra Fruit Extract

Olea Europaea Fruit Oil

Tocopherol

Cetyl Palmitate

Sorbitan Palmitate

Sclerotium Gum

Aroma

Sodium Phytate

Sodium Citrate

Mica

Alcohol

CI 77891

CI 77491

Citral

Limonene

Geraniol

Benzyl Benzoate

Hordeum Vulgare Leaf Juice, Propanediol, Water, Silybum Marianum Ethyl Ester, Galactoarabinan, Glycerin, Salix Alba Bark Extract, Cetearyl Olivate, Simmondsia Chinensis Seed Oil, Squalane, Sorbitan Olivate, Butter Glycerides, Isopropyl Shea Butterate, Lactobacillus Ferment, Leuconostoc Ferment Filtrate, Solanum Lycopersicum Fruit Extract, Lactic Acid, Vaccinium Myrtillus Fruit/Leaf Extract, Saccharum Officinarum Extract, Citrus Aurantium Dulcis Fruit Extract, Citrus Limon Fruit Extract, Acer Saccharum Extract, Citric Acid, Terminalia Ferdinandiana Fruit Extract, Lithospermum Erythrorhizon Root Extract, Hippophae Rhamnoides Oil, Plukenetia Volubilis Seed Oil, Saccharide Isomerate, Tasmannia Lanceolata Fruit/Leaf Extract, Arnica Montana Extract, Borago Officinalis Leaf Extract, Calendula Officinalis Flower Extract, Medicago Sativa Extract, Spiraea Ulmaria Extract, Sambucus Nigra Fruit Extract, Olea Europaea Fruit Oil, Tocopherol, Caprylic/Capric Triglyceride, Cetyl Palmitate, Sorbitan Palmitate, Sclerotium Gum, Aroma, Sodium Phytate, Sodium Citrate, Mica, Alcohol, CI 77891, CI 77491, Citral, Limonene, Linalool, Geraniol, Benzyl Benzoate

Reviews

Be the first to review

Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Caprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss.

Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid.

In practice, that translates to a long shelf life and a consistently elegant skin feel.

While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns.

Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source.

This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out.

This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%.

Cetearyl Olivate is a plant-derived emulsifier and texture enhancer. It helps keep the oil and water phases from separating so your formulas stay stable.

You'll likely see it combined with Sorbitan Olivate (together sold as the trade name Olivem 1000). This combination generates a liquid crystal structure that closely resemble the lipid organization of the stratum corneum.

These "skin-like" liquid crystals improve skin barrier integrity and promote the delivery of actives into the skin.

This ingredient is well-tolerated and has no significant sensitization data.

Because it is derived from the fatty acids in olive oil, this ingredient may not be fungal acne safe.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Lactic Acid is another well-loved alpha hydroxy acid (AHA). It is gentler than glycolic acid but still highly effective.

Its main role is to exfoliate the surface of the skin by loosening the “glue” that holds dead skin cells together. Shedding those old cells leads to smoother, softer, and more even-toned skin.

Because lactic acid molecules are larger than glycolic acid, they don’t penetrate as deeply. This means they’re less likely to sting or irritate, making it a great choice for beginners or those with sensitive skin.

Like glycolic acid, it can:

Lactic acid also acts as a humectant (like hyaluronic acid). It can draw water into the skin to improve hydration and also plays a role in the skin's natural moisturizing factor (NMF) in the form of sodium lactate.

Studies show it can boost ceramide production to strengthen the skin barrier and even help balance the skin’s microbiome.

To get results, choose products with a pH between 3-4.

Lower strengths (5-12%) focus on surface exfoliation; higher strengths (12% and up) can reach deeper in the dermis (deeper, supportive layer) to improve skin texture and firmness over time.

Though it was originally derived from milk, most modern lactic acid used in skincare is vegan. It is made through non-dairy fermentation to create a bio-identical and stable form suitable for all formulations.

When lactic acid shows up near the end of an ingredient list, it usually means the brand added just a tiny amount to adjust the product’s pH.

Legend has it that Cleopatra used to bathe in sour milk to help reduce wrinkles.

Lactic acid is truly a gentle multitasker: it exfoliates, hydrates, strengthens, and brightens. It's a great ingredient for giving your skin a smooth, glowing, and healthy look without the harshness of stronger acids.

Read more about some other popular AHA's here:

Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.

Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.

This ingredient has a scent that is floral, spicy tropical, and citrus-like.

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.

It’s often used to:

Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.

Sorbitan Olivate is created from the fatty acids in olive oil and sorbitol.

This ingredient is an oil in water emulsifier. It helps stabilize a product by preventing oils and waters from separating. Sorbitan Olivate also helps hydrate the skin.

This ingredient is also known as part of Olivem 1000, with Cetearyl Olivate being the other part.

According to a manufacturer, this ingredient helps preserve the natural microbiome of skin. Having a healthy microbiome helps keep our skin healthy and protects against harmful bacteria.

Please note, having a healthy microbiome is different from fungal acne; a healthy microbiome includes small amounts of yeast that normally live on your skin without causing problems.

Fungal acne happens when one type of yeast (Malassezia) grows out of control. This is usually because it's feeding on certain oils or fatty acids. Due to the olive oil base, this ingredient may not be fungal acne safe.

Squalane is the hydrogenated and shelf-stable form of squalene (a lipid that naturally occurs in human sebum).

It is an emollient and skin conditioning agent that is able to integrate seamlessly into the skin's lipid barrier without clogging pores.

This is due to how structurally similar it is to what your skin already produces.

Though it is mostly an emollient that helps soften and hydrate skin, it also has some humectant and occlusive action. Humectants help the skin retain moisture while occlusives seal it in, making squalane a triple-threat moisturizer.

Research shows it has antioxidant capabilities that help protect against stressors like UV exposure, specifically UVA induced oxidative stress. This study also found that it supports collagen biosynthesis in human dermal fibroblasts.

No clinical study has reported significant adverse effects and irritation reactions are very rare from this ingredient (even at 100% concentration).

Overall, it's a fantastic ingredient for hydration and is suitable for all skin types.

This depends on the source. Squalane can be derived from both plants and animals. Most squalane used in skincare comes from plants.

Please note: the source of squalane is only known if disclosed by the brand. We recommend reaching out to the brand if you have any questions about their squalane.

Read more about squalene with an "e".

Though squalane is often called an oil, it’s technically not one. It is a hydrocarbon, meaning it is only made of carbon and hydrogen. True oils are triglycerides and made of fatty acids and glycerol.

The term “oil-free” isn’t regulated so companies can define it however they want. Some exclude all oils, while others just avoid mineral oil or comedogenic oils.

Squalane has a comedogenic rating of 1 from the original 1972 study that tested raw ingredients under occlusion on rabbit ears. This system is not standardized or peer-reviewed, and using the raw ingredients is very different from how diluted cosmetic formulations are used on human skin.

A comedogenic rating of 1 means it is "unlikely to clog pores" according to the original rating system.

The overall formula of a product matters more than the individual ingredients on whether or not it will cause clogged pores.

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!

Similar Comparisons