Contact Temperature Curve
At a glance
A contact temperature curve tracks how temperature changes across the routine, from storage or warming condition to the moment the formula touches skin and continues cooling during spreading.
This directory uses the curve to keep claims precise. A bottle, device, or water bath can have one reading while the contact moment has another.
Curve points
- Ambient room or bathroom temperature.
- Starting package temperature.
- Package surface temperature after warming.
- Dispensed product temperature.
- Contact-surface or skin-simulating surface temperature at first touch.
- Temperature during spreading and after a short cool-down interval.
Why the curve matters
Readers often care about the felt contact moment, not a device setting. The curve makes it harder to confuse storage temperature, bottle temperature, or package surface warmth with the actual user experience.
What evidence can support
- A measured contact-temperature range under specific conditions.
- A comparison between methods if the same curve points are measured.
- A statement that contact temperature differs from bottle temperature or room temperature.
What evidence cannot support
- A universal comfort claim.
- A claim that every formula reaches or holds the same contact temperature.
- Baby, pregnancy, absorption, barrier, eczema, or skin outcome claims.
Claim status
Allowed: under this protocol, contact temperature was measured at specified points.
Needs evidence: maintains contact temperature within X-Y degrees.
Do not say: universal user suitability, universal comfort, localized overheating assurance, or every-formula compatibility.