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Old 23.07.2017, 17:50
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LSF to SPF Conversion

While buying sunscreen recently, most of the NIVEA products had rating in LSF or just the number. Case in point, https://www.nivea.ch/shop/de-ch/nive...085660070.html. I got this one.

Is there any straightforward conversion of LSF ratings to the more standard SPF ones?

Also, is there any difference between sonnencreme and sonnenmilch?
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Old 23.07.2017, 17:53
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Re: LSF to SPF Conversion

Lsf = spf / 2
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Old 23.07.2017, 17:54
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Re: LSF to SPF Conversion

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Is there any straightforward conversion of LSF ratings to the more standard SPF ones?
LSF == Lichtschutzfaktor (German)
SPF == Sun Protection Factor (English)
FPS == Factor de proteccion solar (French)

Conversion from on to the other: Multiply by 1.

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Also, is there any difference between sonnencreme and sonnenmilch?
Viscosity. Think of dairy cream and regular milk.
Sonnenmilch is sun lotion, whereas Sonnencreme is sun cream.
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Old 23.07.2017, 18:04
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Re: LSF to SPF Conversion

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Viscosity. Think of dairy cream and regular milk.
Sonnenmilch is sun lotion, whereas Sonnencreme is sun cream.
Yet, they're equally effective? (for the same SPF / LSF rating)
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Old 23.07.2017, 18:04
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Re: LSF to SPF Conversion

I'm fairly sure that in Europe at least SPF is the same as LSF, which is really just a German term for the same thing.

Found a few references to US or Aussie standards being slightly different, but nothing concrete.
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Old 23.07.2017, 18:04
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Re: LSF to SPF Conversion

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Lsf = spf / 2
any reference for this conversion?
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Old 23.07.2017, 18:12
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Re: LSF to SPF Conversion

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Yet, they're equally effective? (for the same SPF / LSF rating)
Supposedly.
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Old 23.07.2017, 18:16
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Re: LSF to SPF Conversion

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any reference for this conversion?
Should have added that i was referring to the American LPF, as for European systems it's just a bunch of different languages with al the same scale.
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