Is the FRAMESI STRAIGHTENING SYSTEM STRONG formaldehyde-free?

The FRAMESI STRAIGHTENING SYSTEM STRONG is formaldehyde-free and has the following ingredients:

Water

Cetearyl Alcohol

Ammonium Thioglycolate

Ceteareth-20

Paraffinum Liquidum (Mineral Oil)

Glycerin

Ammonium Hydroxide

Diglycerin

PEG-40 Castor Oil

Sericin

Squalene

Hydrolyzed Keratin

Fragrance

Polyquaternium-7

Behentrimonium Chloride

Cetrimonium Chloride

Guar Hydroxypropyltrimonium Chloride

Sodium Dehydroacetate

Simethicone

Caprylyl Glycol

Phenoxyethanol

Potassium Sorbate

Hexyl Cinnamal

Benzyl Salicylate

Linalool

Methylparaben