Biologique Recherche Lotion P50W Versus Hydropeptide Pre-Treatment Toner

Biologique Recherche Lotion P50W Versus Hydropeptide Pre-Treatment Toner

This smoothing toner is formulated around Gluconolactone and Niacinamide to refine skin texture and refine the look of pores.

This smoothing toner is formulated around Lactic Acid and Acetyl Hexapeptide-30 to refine skin texture and brighten dull-looking skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Gluconolactone

Niacinamide

Glycerin

Propylene Glycol

Lactic Acid

Ethoxydiglycol

Magnesium Chloride

Malic Acid

Arctium Lappa Root Extract

Cochlearia Armoracia Root Extract

Quillaja Saponaria Bark Extract

Arnica Montana Flower Extract

Capsicum Frutescens Fruit Extract

Phytic Acid

Citric Acid

Sodium Lactate

Allantoin

Serine

Sulfur

Vinegar

Sodium Salicylate

Sorbitol

Tea-Lactate

Urea

Sodium Benzoate

Sodium Bisulfite

Water, Gluconolactone, Niacinamide, Glycerin, Propylene Glycol, Lactic Acid, Ethoxydiglycol, Magnesium Chloride, Malic Acid, Arctium Lappa Root Extract, Cochlearia Armoracia Root Extract, Quillaja Saponaria Bark Extract, Arnica Montana Flower Extract, Capsicum Frutescens Fruit Extract, Phytic Acid, Citric Acid, Sodium Lactate, Allantoin, Serine, Sulfur, Vinegar, Sodium Salicylate, Sorbitol, Tea-Lactate, Urea, Sodium Benzoate, Sodium Bisulfite

Polysorbate 20

Citrus Aurantium Dulcis Callus Culture Extract

Xanthan Gum

Leuconostoc/Radish Root Ferment Filtrate

Lactobacillus Ferment

Propanediol

Populus Tremuloides Bark Extract

Acetyl Hexapeptide-30

Arginine/Lysine Polypeptide

Vaccinium Myrtillus Fruit/Leaf Extract

Saccharum Officinarum Extract

Acer Saccharum Extract

Citrus Aurantium Dulcis Fruit Extract

Citrus Limon Fruit Extract

Arctostaphylos Uva Ursi Leaf Extract

Magnesium Ascorbyl Phosphate

Hydrolyzed Soy Protein

Menthyl Ethylamido Oxalate

Morus Alba Leaf Extract

Glycyrrhiza Glabra Root Extract

Camellia Oleifera Leaf Extract

Chamomilla Recutita Flower Extract

Sodium Hyaluronate

Geranium Maculatum Extract

Caprylic/Capric Triglyceride

Citrus Limon Peel Extract

Citrus Aurantium Dulcis Peel Extract

Gardenia Taitensis Flower Extract

Cucumis Sativus Fruit Extract

Limonene

Citral

Hydroxycitronellol

Water, Lactic Acid, Polysorbate 20, Glycerin, Citrus Aurantium Dulcis Callus Culture Extract, Xanthan Gum, Leuconostoc/Radish Root Ferment Filtrate, Lactobacillus Ferment, Propanediol, Populus Tremuloides Bark Extract, Acetyl Hexapeptide-30, Arginine/Lysine Polypeptide, Vaccinium Myrtillus Fruit/Leaf Extract, Saccharum Officinarum Extract, Acer Saccharum Extract, Citrus Aurantium Dulcis Fruit Extract, Citrus Limon Fruit Extract, Arctostaphylos Uva Ursi Leaf Extract, Magnesium Ascorbyl Phosphate, Hydrolyzed Soy Protein, Menthyl Ethylamido Oxalate, Morus Alba Leaf Extract, Glycyrrhiza Glabra Root Extract, Camellia Oleifera Leaf Extract, Chamomilla Recutita Flower Extract, Sodium Hyaluronate, Allantoin, Geranium Maculatum Extract, Caprylic/Capric Triglyceride, Citrus Limon Peel Extract, Citrus Aurantium Dulcis Peel Extract, Gardenia Taitensis Flower Extract, Cucumis Sativus Fruit Extract, Limonene, Citral, Hydroxycitronellol

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Alternatives

Ingredients Explained

These ingredients are found in both products.

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

Allantoin is a soothing ingredient known for its protective and moisturizing properties; it's basically a quiet workhorse ingredient you can find in a huge range of cosmetics.

Though it can be derived from the comfrey plant, allantoin is produced synthetically for cosmetic products to ensure purity.

Research shows it can encourage your skin cells to turn over and renew by stimulating keratinocyte and fibroblast proliferation.

It also has mild keratolytic properties to help loosen and shed dead skin cells without being harsh.

Studies also suggest allantoin can help calm inflammation by dialing down some of the chemical signals your skin sends out when it is irritated.

This ingredient is typically used in the 0.1-0.5% range, and the FDA recognizes it as a skin protectant in OTC products up to 2%.

Overall, allantoin is a wonderful addition to most routines; it is stable across a wide pH range (~4-8), works well with other ingredients, and is considered non-sensitizing/non-irritating.

Fun fact: Allantoin is naturally occurring in comfrey root, beets, chamomile, and wheat sprouts. Our bodies even produce it as a byproduct of uric acid metabolism.

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:

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!

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