Find products and ingredients Learn how Skin Deep® works Meet our experts Discover EWG VERIFIED™
Product score: 05

Data Availability:

Limited

Ion Luxe Masque

Ion Luxe Masque

WHERE TO BUY

CATEGORY

Hair Treatment/Serum
Mask

BRAND

Ion

DATA LAST UPDATED

June 2022

Ingredient concerns

See how this product scores for common concerns.

  • LOW
    Cancer
  • HIGH
    Allergies & Immunotoxicity
  • LOW
    Developmental and Reproductive Toxicity
  • HIGH
    Use Restrictions

Ingredient scores

Ingredients are scored based on their formulation and concentration in this product. Click on an ingredient for more information.

Ingredient score: 01
WATER
Appeared as: WATER (AQUA; EAU)
Data Availability: Robust
Expand content Collapse content
FUNCTION(S) solvent
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
CETYL ALCOHOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emulsion stabilizer, fragrance ingredient, opacifying agent, surfactant - emulsifying agent;surfactant - foam booster, viscosity increasing agent - aqueous, viscosity increasing agent -nonaqueous, emollient, emulsifying, emulsion stabilising, foam boosting, masking, opacifying, surfactant, viscosity controlling
CONCERNS • Non-reproductive organ system toxicity (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
GLYCOL STEARATE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emulsion stabilizer, opacifying agent, skin-conditioning agent - emollient, emollient, emulsifying, opacifying, surfactant
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 04
BEHENTRIMONIUM CHLORIDE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antistatic agent, hair conditioning agent, antistatic, hair conditioning, preservative
CONCERNS • Developmental/reproductive toxicity (low)
• Allergies/immunotoxicity (high)
• Use restrictions (high)
• Neurotoxicity (low)
• Endocrine disruption (low)
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
CETEARYL ALCOHOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emulsion stabilizer, opacifying agent, surfactant - foam booster, viscosity increasingagent - aqueous, viscosity increasing agent - nonaqueous, emollient, emulsifying, emulsion stabilising, foam boosting, opacifying, surfactant, viscosity controlling
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
GLYCERIN
Data Availability: Good
Expand content Collapse content
FUNCTION(S) denaturant, fragrance ingredient, hair conditioning agent, humectant, oral care agent;oral health care drug, skin-conditioning agent - humectant, skin protectant, viscosity decreasing agent, perfuming, solvent
CONCERNS • Use restrictions (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
GLYCINE SOJA (SOYBEAN) OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) antioxidant, fragrance ingredient, skin-conditioning agent - occlusive, emollient, skin conditioning
CONCERNS • Developmental/reproductive toxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 03
DIMETHICONE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antifoaming agent, skin-conditioning agent - occlusive, skin protectant, antifoaming, emollient, skin conditioning, skin protecting
CONCERNS • Use restrictions (moderate)
• Persistence and bioaccumulation (high)
• Non-reproductive organ system toxicity (moderate)
• Ecotoxicology (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 04
CETRIMONIUM CHLORIDE
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) antistatic agent, cosmetic biocide, surfactant - emulsifying agent, antimicrobial, antistatic, emulsifying, preservative, surfactant
CONCERNS • Developmental/reproductive toxicity (low)
• Allergies/immunotoxicity (high)
• Use restrictions (high)
• Neurotoxicity (low)
• Endocrine disruption (low)
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
DIMETHYL LAURAMINE OLEATE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) hair conditioning agent, skin-conditioning agent - miscellaneous, antistatic, hair conditioning, skin conditioning, viscosity controlling
CONCERNS • Use restrictions (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 03
POLYSORBATE-60
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) fragrance ingredient, surfactant - emulsifying agent, surfactant - solubilizing agent, emulsifying
CONCERNS • Use restrictions (low)
• Non-reproductive organ system toxicity (low)
• Irritation (skin, eyes, or lungs) (low)
• Contamination concerns (ETHYLENE OXIDE and 1,4-DIOXANE)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 08
FRAGRANCE
Appeared as: FRAGRANCE (PARFUM)
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) deodorant, masking, perfuming
CONCERNS • Allergies/immunotoxicity (high)
• Endocrine disruption (moderate)
• Non-reproductive organ system toxicity (moderate)
• Ecotoxicology (low)
• Irritation (skin, eyes, or lungs) (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
SORBITOL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) flavoring agent, fragrance ingredient, humectant, skin-conditioning agent - humectant, plasticiser, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
STEARYL ALCOHOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emulsion stabilizer, fragrance ingredient, surfactant - emulsifying agent, surfactant - foambooster, viscosity increasing agent - aqueous, viscosity increasing agent - nonaqueous, emollient, emulsifying, emulsion stabilising, foam boosting, masking, opacifying, refatting, surfactant, viscosity controlling
CONCERNS • Irritation (skin, eyes, or lungs) (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 04
CETRIMONIUM METHOSULFATE
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) antistatic agent, cosmetic biocide, surfactant - emulsifying agent, antimicrobial, antistatic, emulsifying, hair conditioning, surfactant
CONCERNS • Developmental/reproductive toxicity (low)
• Allergies/immunotoxicity (high)
• Use restrictions (low)
• Neurotoxicity (low)
• Endocrine disruption (low)
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
QUATERNIUM-91
Data Availability: None
Expand content Collapse content
FUNCTION(S) hair conditioning agent, hair conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 04
PHENOXYETHANOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) fragrance ingredient, preservative
CONCERNS • Allergies/immunotoxicity (low)
• Use restrictions (moderate)
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (high)
• Occupational hazards (high)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
CAPRYLYL GLYCOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) hair conditioning agent, skin-conditioning agent - emollient, emollient, hair conditioning, humectant, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
SODIUM PCA
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) hair conditioning agent, humectant, skin-conditioning agent - humectant, antistatic, hair conditioning, skin conditioning
CONCERNS • Use restrictions (low)
• Contamination concerns (NITROSAMINES)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
MICA
Appeared as: MICA (CI 77019)
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) colorant, opacifying
CONCERNS • Persistence and bioaccumulation (high)
• Non-reproductive organ system toxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
DIMETHICONOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antifoaming agent, skin-conditioning agent - emollient, antifoaming, emollient, moisturising
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
LINUM USITATISSIMUM (LINSEED) SEED OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) fragrance ingredient, skin-conditioning agent - miscellaneous, skin-conditioning agent -occlusive, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
BUTYROSPERMUM PARKII (SHEA) BUTTER
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) skin-conditioning agent - miscellaneous, skin-conditioning agent - occlusive, viscosityincreasing agent - nonaqueous, skin conditioning, viscosity controlling
CONCERNS • Use restrictions (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HELIANTHUS ANNUUS (SUNFLOWER) SEED OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) skin-conditioning agent - miscellaneous, skin-conditioning agent - occlusive, emollient
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
THEOBROMA CACAO (COCOA) SEED BUTTER
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) fragrance ingredient, skin-conditioning agent - occlusive, skin protectant, emollient, masking, skin conditioning, skin protecting
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
MORINGA OLEIFERA SEED OIL
Data Availability: None
Expand content Collapse content
FUNCTION(S) skin-conditioning agent - occlusive, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
CITRIC ACID
Data Availability: Good
Expand content Collapse content
FUNCTION(S) chelating agent, fragrance ingredient, ph adjuster, buffering, chelating, masking
CONCERNS • Use restrictions (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HYDROLYZED AMARANTH PROTEIN
Data Availability: None
Expand content Collapse content
Ingredient score: 02
CI 77499
Appeared as: IRON OXIDES (CI 77491; CI 77499)
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) colorant, cosmetic colorant
CONCERNS • Enhanced skin absorption
• Persistence and bioaccumulation (high)
• Non-reproductive organ system toxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
PANTHENOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) hair conditioning agent, antistatic, hair conditioning, skin conditioning
CONCERNS • Multiple, additive exposure sources (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HYDROLYZED GLYCINE SOJA (SOY) PROTEIN
Appeared as: HYDROLYZED SOY PROTEIN
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) hair conditioning agent, skin-conditioning agent - miscellaneous, antistatic, hair conditioning, humectant, skin conditioning
CONCERNS • Developmental/reproductive toxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
SORBIC ACID
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) fragrance ingredient, preservative
CONCERNS • Allergies/immunotoxicity (moderate)
• Non-reproductive organ system toxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
TITANIUM DIOXIDE
Appeared as: TITANIUM DIOXIDE (CI 77891)
Data Availability: Good
Expand content Collapse content
FUNCTION(S) colorant, opacifying agent, sunscreen agent, ultraviolet light absorber
CONCERNS • Cancer (moderate)
• Non-reproductive organ system toxicity (moderate)
• Occupational hazards (high)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
SILICA, AMORPHOUS
Appeared as: SILICA
Data Availability: Good
Expand content Collapse content
FUNCTION(S) abrasive, absorbent, anticaking agent, bulking agent, opacifying agent, suspending agent- nonsurfactant, anticaking, opacifying
CONCERNS • Cancer (moderate)
• Use restrictions (low)
• Persistence and bioaccumulation (high)
• Non-reproductive organ system toxicity (low)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
TIN OXIDE
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) abrasive, bulking agent, opacifying agent, bulking, opacifying, viscosity controlling
CONCERNS • Cancer (low)
• Allergies/immunotoxicity (low)
• Enhanced skin absorption
• Persistence and bioaccumulation (high)
• Non-reproductive organ system toxicity (low)
• Irritation (skin, eyes, or lungs) (low)
• Occupational hazards (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 06
FD&C YELLOW NO. 5 (CI 19140)
Appeared as: YELLOW 5 (CI 19140)
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) colorant
CONCERNS • Cancer (low)
• Developmental/reproductive toxicity (low)
• Allergies/immunotoxicity (moderate)
• Neurotoxicity (moderate)
• Endocrine disruption (low)
• Persistence and bioaccumulation (moderate)
• Non-reproductive organ system toxicity (moderate)
• Contamination concerns (BIPHENYL-2-YLAMINE and CADMIUM (pyrophoric))
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
ALUMINUM CALCIUM SODIUM SILICATE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) bulking agent, bulking
CONCERNS • Non-reproductive organ system toxicity (low)
• Multiple, additive exposure sources (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
COCOS NUCIFERA (COCONUT) OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) fragrance ingredient, hair conditioning agent, skin-conditioning agent - miscellaneous;skin-conditioning agent - occlusive, emollient, hair conditioning, masking, skin conditioning, solvent
CONCERNS • Allergies/immunotoxicity (low)
• Multiple, additive exposure sources (low)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
ARGANIA SPINOSA (ARGAN) KERNEL OIL
Appeared as: ARGANIA SPINOSA KERNEL OIL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) skin-conditioning agent - emollient, skin-conditioning agent - miscellaneous;skin-conditioning agent - occlusive, emollient, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
EUPHORBIA CERIFERA (CANDELILLA) WAX
Appeared as: EUPHORBIA CERIFERA WAX (CANDELILLA)
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) cosmetic astringent, emulsion stabilizer, film former, fragrance ingredient;skin-conditioning agent - miscellaneous, skin-conditioning agent - occlusive, viscosity increasing agent- nonaqueous, emollient, film forming
CONCERNS • Allergies/immunotoxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 04
CHLORHEXIDINE DIHYDROCHLORIDE
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) cosmetic biocide, oral care agent, preservative, antimicrobial, oral care
CONCERNS • Allergies/immunotoxicity (moderate)
• Use restrictions (moderate)
• Persistence and bioaccumulation (moderate)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 03
TOCOPHERYL ACETATE
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) antioxidant, skin-conditioning agent - miscellaneous, skin conditioning
CONCERNS • Cancer (low)
• Allergies/immunotoxicity (moderate)
• Contamination concerns (HYDROQUINONE)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
BRASSICA CAMPESTRIS (RAPESEED) SEED OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) skin-conditioning agent - occlusive, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
EMBLICA OFFICINALIS (INDIAN GOOSEBERRY) FRUIT EXTRACT
Appeared as: EMBLICA OFFICINALIS FRUIT EXTRACT
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
MANGIFERA INDICA (MANGO) SEED BUTTER
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) skin-conditioning agent - occlusive, skin conditioning
CONCERNS • Allergies/immunotoxicity (low)
• Multiple, additive exposure sources (low)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
ALOE BARBADENSIS (ALOE VERA) LEAF JUICE
Appeared as: ALOE BARBADENSIS LEAF JUICE
Data Availability: Limited
Expand content Collapse content
CONCERNS • Cancer (moderate)
• Developmental/reproductive toxicity (low)
• Use restrictions (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL
Data Availability: None
Expand content Collapse content
FUNCTION(S) hair conditioning agent, skin-conditioning agent - miscellaneous, hair conditioning, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
PENTASODIUM DTPA
Appeared as: PENTASODIUM PENTETATE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) chelating agent, chelating
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 06
CI 42090 (FD&C BLUE NO. 1 OR D&C BLUE NO. 4)
Appeared as: BLUE 1 (CI 42090)
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) colorant, hair dyeing
CONCERNS • Cancer (moderate)
• Use restrictions (high)
• Neurotoxicity (low)
• Endocrine disruption (low)
• Persistence and bioaccumulation (moderate)
• Non-reproductive organ system toxicity (moderate)
• Multiple, additive exposure sources (low)
• Irritation (skin, eyes, or lungs) (moderate)
• Contamination concerns (ANILINE and CADMIUM (pyrophoric))
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
D&C RED NO. 33 (CI 17200)
Appeared as: RED 33 (CI 17200)
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) colorant, hair dyeing
CONCERNS • Cancer (moderate)
• Allergies/immunotoxicity (low)
• Use restrictions (high)
• Contamination concerns (BIPHENYL-2-YLAMINE)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 04
FD&C RED NO. 4 (CI 14700)
Appeared as: RED 4 (CI 14700)
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) colorant, cosmetic colorant
CONCERNS • Cancer (low)
• Use restrictions (high)
• Endocrine disruption (low)
LEARN MORE ABOUT THIS INGREDIENT

Ingredients from packaging:

WATER (AQUA, EAU), CETYL ALCOHOL, GLYCOL STEARATE, BEHENTRIMONIUM CHLORIDE, CETEARYL ALCOHOL, GLYCERIN, GLYCINE SOJA (SOYBEAN) OIL, DIMETHICONE, CETRIMONIUM CHLORIDE, DIMETHYL LAURAMINE OLEATE, POLYSORBATE 60, FRAGRANCE (PARFUM), SORBITOL, STEARYL ALCOHOL, CETRIMONIUM METHOSULFATE, QUATERNIUM-91, PHENOXYETHANOL, CAPRYLYL GLYCOL, SODIUM PCA, MICA (CI 77019), DIMETHICONOL, LINUM USITATISSIMUM (LINSEED) SEED OIL, BUTYROSPERMUM PARKII (SHEA) BUTTER, HELIANTHUS ANNUUS (SUNFLOWER) SEED OIL, THEOBROMA CACAO (COCOA) SEED BUTTER, MORINGA OLEIFERA SEED OIL, CITRIC ACID, HYDROLYZED AMARANTH PROTEIN, IRON OXIDES (CI 77491, CI 77499), PANTHENOL, HYDROLYZED SOY PROTEIN, SORBIC ACID, TITANIUM DIOXIDE (CI 77891), SILICA, TIN OXIDE, YELLOW 5 (CI 19140), ALUMINUM CALCIUM SODIUM SILICATE, COCOS NUCIFERA (COCONUT) OIL, ARGANIA SPINOSA KERNEL OIL, EUPHORBIA CERIFERA (CANDELILLA) WAX (CANDELILLA CERA/CIRE DE CANDELILLA), CHLORHEXIDINE DIHYDROCHLORIDE, TOCOPHERYL ACETATE, BRASSICA CAMPESTRIS (RAPESEED) SEED OIL, EMBLICA OFFICINALIS FRUIT EXTRACT, MANGIFERA INDICA (MANGO) SEED BUTTER, ALOE BARBADENSIS LEAF JUICE, HYDROLYZED VEGETABLE PROTEIN PG-PROPYL SILANETRIOL, PENTASODIUM PENTETATE, BLUE 1 (CI 42090), RED 33 (CI 17200), RED 4 (CI 14700).

Product's animal testing policies

Some cosmetics companies have taken People for the Ethical Treatment of Animals and Leaping Bunny animal-testing pledges. For consumers who are concerned about companies’ policies on animal testing, Skin Deep reports this information.


Unknown

Leading international certifiers PETA and Leaping Bunny have no information concerning this company’s use of animal testing.

Understanding scores

Cosmetics and personal care products are not required to be tested for safety before being allowed on the market. The Skin Deep® scoring system was designed to help the public understand whether a product is safe to use or whether it contains ingredients of concern.

Every product and ingredient in Skin Deep gets a two-part score – one for hazard and one for data availability. The safest products score well by both measures, with a low hazard rating and a fair or better data availability rating.

HOW WE DETERMINE SCORES

Hazard score

The Skin Deep ingredient hazard score, from 1 to 10, reflects known and suspected hazards linked to the ingredients. The EWG VERIFIED™ mark means a product meets EWG’s strictest criteria for transparency and health.

Score legend

Data availability

The Skin Deep data availability rating reflects the number of scientific studies about the product or ingredient in the published scientific literature.

NONE LIMITED FAIR GOOD ROBUST
Low Availability
Moderate Availability
High Availability

More hair treatment/serum

VIEW ALL hair treatment/serum

EWG research
on the go

Find personal care, cleaning, and food products on the EWG Healthy Living app.

DOWNLOAD THE APP