Plankton + PHA™ Flower Acid Algae Serum

MARA Beauty

Plankton + PHA™ Flower Acid Algae Serum

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About this product

The MARA Beauty Plankton + PHA™ Flower Acid Algae Serum is a serums, essence, ampoule. Our analysis of its 34 ingredients (27 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
34
Low-risk
27
Fragrance
Fragrance-free
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 8/6
Good for dry skin
Algae Extract Gluconolactone Glyceryl Caprylate Borago Officinalis Seed Oil Squalane Caprylic/Capric Triglyceride Glycerin Lactic Acid
Caution for dry skin
Glyceryl Caprylate Sodium Stearoyl Glutamate Sorbitan Olivate Xanthan Gum Glycerin Sodium Hydroxide
Oily/Acne-Prone Skin No data
Sensitive Skin 5/7
Good for sensitive skin
Gigartina Stellata Extract Palmaria Palmata Extract Limonium Gerberi Extract Glycerin Haematococcus Pluvialis Extract
Caution for sensitive skin
Algae Extract Gluconolactone Caprylic/Capric Triglyceride Glycerin Citric Acid Potassium Sorbate Lactic Acid

Ingredients list

34 total
Lower hazard (1) Higher hazard (4)
All34 Skin Conditioning23 Fragrance7 Solvent6 Hair Conditioning5 Humectant5 Emollient5 Skin Conditioning Emollient4 Emulsion Stabilising4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Palmaria Palmata Extract
(Skin Protecting)
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Water
(Solvent)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
B
Cetearyl Olivate
(Hair Conditioning)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
1
Silybum Marianum Seed Oil
(Skin Conditioning)
1
A
Sorbitan Olivate
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Glyceryl Caprylate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
B
Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
1
A
1,2-Hexanediol
(Solvent)
1
Gluconolactone
(Fragrance, Humectant, Solvent)
Bellis Perennis Flower/Helichrysum Italicum Extract
(Skin Conditioning)
1
Hibiscus Sabdariffa Flower Extract
(Skin Conditioning)
1
Algae Extract
(Fragrance, Humectant, Oral Care Agent, Skin Conditioning, Emollient)
1
Gigartina Stellata Extract
(Skin Protecting)
Chondrus Crispus Extract
(Skin Conditioning, Viscosity Controlling)
1
Haematococcus Pluvialis Extract
(Antioxidant)
Avena sativa Kernel Extract
(Abrasive, Antioxidant, Skin Conditioning, Skin Conditioning Emollient)
1
Salicornia Herbacea Extract
(Skin Conditioning)
1
Limonium Gerberi Extract
(Hair Conditioning, Skin Protecting)
RIBES NIGRUM SEED OIL
(Skin Conditioning Emollient)
oenothera biennis oil
(Skin Conditioning Emollient)
1
A
Borago Officinalis Seed Oil
(Emollient, Skin Conditioning)
Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Caprylhydroxamic Acid
(Chelating Agent)
1
Sodium Phytate
(Chelating Agent, Oral Care Agent)
3
A
Potassium Sorbate
(Fragrance, Preservative)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin

My Ingredient Notes

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Key ingredients

Palmaria Palmata Extract
Skin Protecting
Lactic Acid
Exfoliant, Humectant
Pentylene Glycol
Skin Conditioning
Caprylic/Capric Triglyceride
Emollient, Skin Conditioning
Squalane
Emollient, Skin Conditioning
Silybum Marianum Seed Oil
Skin Conditioning

Benefits

Good for dry skin

Concerns

Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Palmaria Palmata Extract
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Cetearyl Olivate
Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioning
Squalane
Emollient, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientHair conditioningRefattingSkin conditioning
Silybum Marianum Seed Oil
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Glyceryl Caprylate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningEmollientEmulsifyingSurfactant
Sodium Stearoyl Glutamate
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningSkin conditioningSurfactant - cleansingagentEmulsifying
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Gluconolactone
Fragrance, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHumectantSolvent
Bellis Perennis Flower/Helichrysum Italicum Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Hibiscus Sabdariffa Flower Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Algae Extract
Fragrance, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHumectantOral care agentSkin conditioningEmollient
+ 15 more — see the full ingredients list above
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Sorbitan Olivate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmulsifyingSurfactant Fungal-acne trigger
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Lactic Acid

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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