Is Alto Defense Serum by skinbetter SCIENCE safe?

Alto Defense Serum is rated STOP by Million Marker due to ingredients with known health concerns. We recommend considering safer alternatives.

What harmful chemicals does Alto Defense Serum avoid?

Million Marker evaluates products for harmful chemicals including BPA, phthalates, parabens, PFAS, flame retardants, and other endocrine-disrupting compounds. Alto Defense Serum has been analyzed and rated STOP based on its ingredient profile.

Where can I buy Alto Defense Serum?

You can purchase Alto Defense Serum directly from skinbetter SCIENCE or search online retailers for the best prices and availability.

How does Million Marker rate Facial Care?

Million Marker rates Facial Care and other products on a GO/SLOW/STOP scale based on ingredient safety analysis. GO products are the safest choices, SLOW products have moderate concerns, and STOP products contain ingredients we recommend avoiding.

Products are split into three levels based on ingredient labels

Best choice

SLOW

Contains ingredients with possible health concerns

STOP

Contains harmful ingredients

STOP

skinbetter SCIENCE

Alto Defense Serum

Last verified: April 22, 2026

Aqua/Water/Eau
Butylene Glycol
Propanediol
Ethylhexyl Olivate
Cetearyl Alcohol
Chlorogenic Acids
Hydrolyzed Sodium Hyaluronate
Lauryl Lactate
Dimethyl Isosorbide
Glycyrrhiza Glabra Root Extract/Licorice Root Extract
Tetrahexyldecyl Ascorbate
Ergothioneine
Taraxacum Officinale Rhizome/Root Extract - Dandelion Rhizome/Root Extract
Arabidopsis Thaliana Extract
Carnosine
Camellia Sinensis Leaf Extract
Vitis Vinifera Seed Extract/Grape Seed Extract
Theobroma Cacao Seed Extract/Cocoa Seed Extract
Curcuma Longa Root Extract/Turmeric Root Extract
Olea Europaea Fruit Extract/Olive Fruit Extract
Euterpe Oleracea Fruit Extract
Palmitoyl Tripeptide-1
Buddleja Officinalis Flower Extract
Coffea Arabica Seed Extract/Coffee Seed Extract
Crocus Sativus Flower Extract
Superoxide Dismutase
Ubiquinone
Zingiber Officinale Root Extract/Ginger Root Extract
Ceramide NP
Ceramide AP
Ceramide EOP
Linoleic Acid
Linolenic Acid
Ascorbic Acid
Bisabolol
Tocopherol
Tocopheryl Acetate
Cholesterol
Phytosphingosine
Jojoba Esters
Sodium PCA
Pentylene Glycol
Methyl Gluceth-20
Glycerin
Helianthus Annuus Seed Cera/Sunflower Seed Wax
Acacia Decurrens Flower Cera/Acacia Decurrens Flower Wax
Lecithin
Sodium Lauroyl Lactylate
Dicetyl Phosphate
Propanediol Dicaprylate/Caprate
Polyglycerin-3
Ceteth-20 Phosphate
Diisostearyl Malate
Xanthan Gum
Steareth-2
Acacia Senegal Gum
Carbomer
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Maltodextrin
Sodium Hydroxide
Citric Acid
Tetrasodium Glutamate Diacetate
Ethylhexylglycerin
Phenoxyethanol
Ethylhexyl Palmitate
Lactic Acid
Sorbitan Isostearate
Tribehenin

Why This Product is Rated STOP

Alto Defense Serum by skinbetter SCIENCE has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.

We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.

Learn more about how Million Marker scores products →