Celestine Hydra-Peptide Replenishing Serum

Earth Harbor

Celestine Hydra-Peptide Replenishing Serum

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About this product

The Earth Harbor Celestine Hydra-Peptide Replenishing Serum is a serums, essence, ampoule. Our analysis of its 43 ingredients (34 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
43
Low-risk
34
Fragrance
Fragrance-free
Origin
United States
Data updated
Jun 2026

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 13/7
Good for dry skin
Betaine Cetyl Palmitate Squalane Isoamyl Laurate Caprylic/Capric Triglyceride Sodium Hyaluronate Glycerin Coco-Caprylate/Caprate Hydrolyzed Pea Protein Tremella Fuciformis Sporocarp Extract Lactic Acid Lecithin Aloe Barbadensis Flower Extract
Caution for dry skin
Punica Granatum Extract Sorbitan Olivate Sorbitan Palmitate Xanthan Gum Glycerin Achillea Millefolium Extract Lecithin
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Punica Granatum Extract
Sensitive Skin 5/11
Good for sensitive skin
Glycerin Laminaria Digitata Extract Tremella Fuciformis Sporocarp Extract Achillea Millefolium Extract Aloe Barbadensis Flower Extract
Caution for sensitive skin
Glycine Punica Granatum Extract Cetyl Palmitate Isoamyl Laurate Caprylic/Capric Triglyceride Glycerin Proline Citric Acid Achillea Millefolium Extract Lactic Acid Benzyl Alcohol

Ingredients list

43 total
Lower hazard (1) Higher hazard (5)
All43 Skin Conditioning37 Hair Conditioning12 Fragrance10 Emollient8 Humectant7 Masking6 Antistatic Agent5 Solvent5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
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
Lactobacillus/Nereocystis Leutkeana Ferment Filtrate
(Hair Conditioning, Skin Conditioning)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
Punica Granatum Extract
(Astringent, Masking, Tonic)
1
Laminaria Digitata Extract
(Skin Protecting)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
B
Isoamyl Laurate
(Fragrance, Skin Conditioning, Emollient)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
Oryza Sativa Lipids
(Skin Conditioning)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Tremella Fuciformis Sporocarp Extract
(Antioxidant, Hair Conditioning, Humectant, Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Hydrolyzed Rice Protein
(Hair Conditioning, Skin Conditioning, Antistatic Agent)
1
Hydrolyzed Pea Protein
(Antistatic Agent, Emollient, Hair Conditioning, Skin Conditioning)
3
B
Achillea Millefolium Extract
(Antidandruff Agent, Cleansing, Masking, Refreshing, Skin Conditioning, Soothing, Tonic)
1
3
B
Aloe Barbadensis Flower Extract
(Emollient, Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
1
A
Proline
(Fragrance, Hair Conditioning, Skin Conditioning)
1
A
Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning)
1
B
Betaine
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning, Viscosity Controlling)
1
B
Coco-Caprylate/Caprate
(Emollient, Skin Conditioning)
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
1
A
Sorbitan Olivate
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
B
Cetearyl Olivate
(Hair Conditioning)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Pullulan
(Binding Agent, Film Forming, Binding)
1
B
Cetyl Palmitate
(Fragrance, Emollient, Masking, Skin Conditioning)
1
A
Sorbitan Palmitate
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Phytic Acid
(Chelating Agent, Oral Care Agent)
1
A
Dehydroacetic Acid
(Preservative)
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
Melia Azadirachta Flower Extract
(Skin Conditioning)
1
Corallina Officinalis Extract
(Skin Conditioning)
1
Coccinia Indica Fruit Extract
(Skin Conditioning)
Solanum Melongena Fruit Extract
(Skin Conditioning)
Simmondsia Chinensis Seed Extract
(Abrasive, Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
1
Ocimum Sanctum Leaf Extract
(Skin Conditioning)
Ocimum Basilicum Flower/Leaf Extract
(Tonic)
Curcuma Longa Root Extract
(Fragrance, Perfuming)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin E
Protects skin and soothes irritation.
Niacinamide
Strengthens, smooths, and brightens skin.
Hyaluronic Acid
Hydrates by attracting and holding water.
Exfoliators
Removes dead skin cells to smoothe texture.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Redness ReducingSoothes visible redness and calms irritation.
Anti-AgingSoftens lines and helps skin look youthful.
Reduces IrritationEases discomfort and supports skin resilience.
BrighteningRestores radiance to dull, tired skin.
Scar HealingImproves the look of marks and scars.
Dark SpotsFades dark spots for even skin tone.

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Lactobacillus/Nereocystis Leutkeana Ferment Filtrate
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioning
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Punica Granatum Extract
Astringent, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 AstringentMaskingTonic
Laminaria Digitata Extract
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Isoamyl Laurate
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceSkin conditioningEmollient
Squalane
Emollient, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientHair conditioningRefattingSkin conditioning
Oryza Sativa Lipids
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Tremella Fuciformis Sporocarp Extract
Antioxidant, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantHair conditioningHumectantSkin conditioning
Hydrolyzed Rice Protein
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningAntistatic agent
Hydrolyzed Pea Protein
Antistatic agent, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Antistatic agentEmollientHair conditioningSkin conditioning
Achillea Millefolium Extract
Antidandruff agent, Cleansing
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Antidandruff agentCleansingMaskingRefreshingSkin conditioningSoothingTonic
+ 20 more — see the full ingredients list above
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
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Aloe Barbadensis Flower Extract
Emollient, Skin conditioning
Low-to-moderate hazard.Read moreShow less
EWG 1–3 CIR B EmollientSkin conditioning Good for Sensitive Skin
Sorbitan Olivate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmulsifyingSurfactant Fungal-acne trigger
Sorbitan Palmitate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmulsifyingSurfactant Fungal-acne trigger
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
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
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

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.

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

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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