Fig. 3

Fingerprint images recorded after application of cosmetic and daily use products. a Mustard oil (viscous). b Parachute jasmine oil (non-viscous). c Nivea lotion (greasy). d VLCC lotion (non-greasy). e Lifebuoy hand sanitizer (alcohol-based). f Kudos hand sanitizer (non-alcohol-based). g Kaveri mehendi (synthetic). h Neha mehendi (natural)