Application of PVP in base makeup products: key raw materials for dispersion stability and makeup holding optimization

Pulchritudo principalis productorum fundi (fundus liquidus, crema fundi, fundus in cuspidem aeris) est applicatio levis, pulvis aequaliter dispersus, non facile sedimentans, maquillatio durabilis, et minuens adhaesionem pulveris, maculationem, et ablationem maquillaturae. Polyvinylpyrrolidone (PVP), propter excellentem dispersionem pigmentorum, facultatem formandi pelliculam, et facultatem regendae reologiae, evasit additivum functionale importante in formula maquillaturae fundi, et late utitur in fundo liquido aqua-oleum, in cuspidibus aeris, in cremis fundi maquillaturae, et in aliis productis.

1. Mechanismus actionis principalis: Actio triplex dispersionis, formationis pelliculae, et regulationis reologiae

1. Mechanismus dispersionis et stabilitatis pigmenti: Moleculae PVP adsorbuntur in superficie particulae pulveris oxydi ferri et dioxydi titani per ligamina hydrogenii, ut stratum colloidale protectivum formetur; hoc impedit agglutinationem et sedimentationem particulae pigmenti, evitans stratificationem fundi cosmeticorum et praecipitationem pasta coloris durante conservatione, et certificat consistentiam coloris totius phialae producti.

2. Mechanismus formationis pelliculae cosmeticorum: Post applicationem PVP in faciem, pellicula levis et flexibilis transparens formatur, quae pulverem firmiter in superficie cutis fixat, minuens desquamationem propter sudorem et frictionem, meliorans tempus tenacitatis fundi cosmeticorum; pellicula est pervia, minuens periculum suffocationis.

Mechanismus adjustmentis reologicae: adjustit viscositatem systematis, meliorat fluxum et diffusionem fundi liquidorum, meliorat levitatem applicationis, minuit rugas, et meliorat aequalitatem fundi cosmeticorum in occultando.

2. Applicationes typicae et controlus processus

1. Fundamentum liquidum aquae et olei: addere 0.8%–1.8% PVP K30 ad stabilizandam dispersionem toneris, meliorandam diffusionem et minuendam sedimentationem stratificatam. Puncta clavicularia processus: PVP praedissolvitur in phasim aquosam, deinde homogenizatur et emulsificatur cum phasim oleosam et pasta colorata. Velocitas homogenizationis moderate regitur ut agglomeratio pulveris evitetur, et pH regitur ad 6.0–7.0.

2. Corpus substantiae fundationis cushion aeris: addere 1.0%–2.0% PVP K40 ad meliorandam facultatem adhaesionis corporis substantiae, ad applicandum truccum levi, ad minuendum pulverem volantem et ad meliorandam tenacitatem truccationis. Puncta clavicularia processus: PVP et humectans primum penitus dissolvuntur, deinde adduntur ad systema pulveris colorati pro terendo et dispertiendo per omnia.

3. foundation make-up cream/foundation cream: add 1.2% – 2.2% PVP K60 to improve the structural stability of the cream, improve the application ductility, and reduce the risk of oil production and collapse of the cream. Process key points: PVP is melted with oil and wax and heated at 70–75 ℃, thoroughly stirred and homogenized.

3. Advantages and safety features

Compared with traditional base makeup dispersing additives, PVP has multiple functions of dispersion, film forming, and moisturizing, and is well compatible with various powders, emulsifiers, and oils in foundation make-up, without changing the color of foundation make-up. Cosmetic-grade PVP is non-irritating and non-allergenic, in compliance with cosmetics regulations in China, Europe, and the United States, and suitable for various skin types as a base makeup formula.