Living Proof Perfect Hair Day (PhD) 5-in-1 Styling Treatment
by Living Proof · hair_care
Editor's Take
Proprietary thickening chemistry and biomimetic lipids deliver genuine multi-benefit performance, but the ethoxylated surfactants and synthetic fragrance keep it far from clean.
Four-pillar formula scores
- Efficacy: 8.4 / 10
- Modern Tech: 8.5 / 10
- Clean Beauty: 3.9 / 10
- Sustainability: 5.8 / 10
The Verdict
This is a highly advanced styling treatment that earns its efficacy score through proprietary Polyalkylaminoester-1 thickening technology and a biomimetic cuticle-sealing lipid system , the heat protection and hold formula are legitimately sophisticated. The trade-off is a clean score anchored by multiple ethoxylated surfactants (Oleth-10, Steareth-2, Steareth-10), quaternary ammonium compounds, and undisclosed fragrance. Worth it if you prioritize performance and thermal protection over green chemistry alignment; skip it if clean formulation is non-negotiable.
Full INCI list
Water/Eau/Aqua, Myristyl Alcohol, C13-15 Alkane, Behentrimonium Methosulfate, Butylene Glycol, Maltodextrin/VP Copolymer, Behenyl/Stearyl Aminopropanediol Esters, Polyalkylaminoester-1, Oleyl Alcohol, Hydroxyethylcellulose, Myrica Pubescens Fruit Wax, Astrocaryum Murumuru Seed Butter, Polyquaternium-55, Lauryl Methyl Gluceth-10 Hydroxypropyldimonium Chloride, PPG-3 Benzyl Ether Ethylhexanoate, PPG-2 Myristyl Ether Propionate, Cetyl Alcohol, Oleth-10, Steareth-2, Steareth-10, Fragrance/Parfum, Caprylic Acid, Lauric Acid, Potassium Sorbate, Propanediol, Citronellol, Limonene, Citral, Linalool.