Cos De BAHA LS Lactic Acid 12.5 Serum

Cos De BAHA LS Lactic Acid 12.5 Serum

Efficacy87/100IrritancyLow

Works for

Evens skin tone
Lactic acid, Camellia sinensis leaf extract
Works well
What the product description says
“It helps reduce the appearance of fine lines, wrinkles, and dark spots.”
Source: Yesstyle

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: lactic acid

Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

Lactic acidKey activeEffect: HighAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)~5.4–8.1%
Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.9–1.4%
Exfoliation
Lactic acid
Works well
What the product description says
“A serum that provides mild exfoliation for healthier skin.”
Source: Yesstyle

This product can help exfoliate the skin. In other words, it helps break down the bonds between dead cells on the surface of the skin and speed up the skin turnover. Skin often appears softer and brighter after exfoliation, but overdoing it can result in disrupted skin barrier. The following ingredient is doing the exfoliating job in this product: lactic acid.

Lactic acidKey activeEffect: HighAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)~5.4–8.1%
Moisturizing
Lactic acid, Arginine + 2 more
Works
What the product description says
“Lactic acid is a hydrating alpha hydroxy acid (AHA) commonly derived from milk, but there are alternative vegan sources, like fermented corn starch, beets, and other sugar-rich foods.”
Source: Yesstyle

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: arginine, lactic acid.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: arginine, aloe barbadensis leaf extract.

Lactic acidKey active· HumectantEffect: HighAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)~5.4–8.1%
ArginineKey active· Humectant, OcclusiveEffect: HighAn amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin~1.9–2.8%
Aloe barbadensis leaf extract· Humectant, EmollientEffect: LowTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~23–34%
Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.9–1.4%
Anti-aging
Lactic acid, Camellia sinensis leaf extract
May help
What the product description says
“It helps reduce the appearance of fine lines, wrinkles, and dark spots.”
Source: Yesstyle

This product contains lactic acid. This ingredient might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.

Lactic acidKey activeEffect: MediumAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)~5.4–8.1%
Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.9–1.4%
Anti-oxidation
Side benefit · Camellia sinensis leaf extract, Sambucus nigra flower extract
May help

This product contains antioxidants (camellia sinensis leaf extract) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.

Camellia sinensis leaf extractKey activeEffect: MediumCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~0.9–1.4%
Sambucus nigra flower extractEffect: LowA plant extract that might help neutralize free radicals in skin~0.4–0.9%

Can it cause trouble?

Irritancy
5 flagged ingredients
Low risk
We flag 5 ingredients with irritancy potential; the product's overall irritancy is low. The table lists each ingredient's own rating.
IngredientFunctionIrritationEst. amount
Sambucus nigra flower extractA plant extract that might help neutralize free radicals in skinHigh~0.4–0.9%est.
Aloe barbadensis leaf extractTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skinMedium~23–34%est.
Lactic acidAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)Medium~5.4–8.1%est.
Sodium citrateHelps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve productsMedium~3.4–5.2%est.
1,2-hexanediolA preservativeMedium~0.4–0.95%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

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Ingredients

Filter by role to see what each ingredient is doing.

Aloe barbadensis leaf extract~23–34%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin

More about Aloe barbadensis leaf extract
Lactic acid~5.4–8.1%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Evens skin toneMoisturizingExfoliationAnti-aging

An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)

More about Lactic acid
Propanediol~4.1–6.2%
Formula
Irritation risk
Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol
Sodium citrate~3.4–5.2%
Irritant · medium
Irritation risk
Medium

Helps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve products

More about Sodium citrate
1,2-hexanediol~0.4–0.95%
Irritant · medium
Irritation risk
Medium

A preservative

More about 1,2-hexanediol
Arginine~1.9–2.8%
Key active
Irritation risk
Low
Works for
Moisturizing

An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin

More about Arginine
Hydroxyethylcellulose~1.2–1.8%
Formula
Irritation risk
Low

Used to thicken product formulations and create gel-like textures

More about Hydroxyethylcellulose
Camellia sinensis leaf extract~0.9–1.4%
Key active
Irritation risk
Low
Works for
AntibacterialAnti-oxidationAnti-agingAnti-blemishMoisturizingEvens skin tone

Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation

More about Camellia sinensis leaf extract
Sambucus nigra flower extract~0.4–0.9%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatoryAnti-oxidation

A plant extract that might help neutralize free radicals in skin

More about Sambucus nigra flower extract
Momordica charantia fruit extract~0.35–0.8%
Formula
Leontopodium alpinum extract~0.1–0.5%
Formula
Ingredient list view

Aloe barbadensis leaf extract, Lactic acid, Propanediol, Sodium citrate, 1,2-hexanediol, Arginine, Hydroxyethylcellulose, Camellia sinensis leaf extract, Sambucus nigra flower extract, Momordica charantia fruit extract, Leontopodium alpinum extract

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Yesstyle
$9.49
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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
Cos De BAHALS Lactic Acid 12.5 SerumYOUR PRODUCTMaeloveSuper Smooth Resurfacing SerumPeace OutDark Spots SerumProfkaСыворотка для лица ANTI-ACNE LACTIC SERUM
Match—57%57%55%
Price$9.49$32.95+$23.46——
Shared key ingredients—2 of 42 of 42 of 4
Key difference—Salicylic AcidNiacinamideGlycerin
Irritancy Low Low Low Low
Drying alcohol————
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Product summary

"Cos De BAHA - LS Lactic Acid 12.5 Serum" is effective for: Exfoliation and Evens skin tone

This product could be helpful for: Anti-aging and Moisturizing, but its actives are not the most effective or are not well-studied.

Ingredient callouts

  • Exfoliating acids (lactic acid 5.40% - 8.10%). In this concentration, they will have a noticeable exfoliating effect. They can also have an anti-aging effect and stimulate collagen production in a long-run. Lactic Acid can also help to attract water to the upper layer (works as a humectant).
  • Humectants (arginine 1.90% - 2.80% and lactic acid 5.40% - 8.10%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.

Price

The product retails for 11.80$ in the United States.

For a detailed price comparison: click here.

Cos De BAHA LS Lactic Acid 12.5 Serum
Cos De BAHALS Lactic Acid 12.5 Serum

Affiliate links · As an Amazon Associate, WIMJ earns from qualifying purchases.

As an Amazon Associate, WIMJ earns from qualifying purchases.