The sun protection experiment 2 months update

It's been two months since I started my sun protection experiment.
Time to report on what I have found.

I used up the Goldwell Dual Senses Sun Reflects Leave-In Protect Spray during the experiment, so the last two weeks I only used the Schwarzkopf Bonacure sun protect on the hair SPF test.

First
I have never thought of just how much dust and crap is in the air outside. I found out shockingly quick though. The set-up got really, really nasty in just a few days. I guess it got worse from sitting literally just inside a usually open window and being coated in a spray a lot. The wetness should really attract lint and stuff.
Still though. Ew.
Well, I guess the lint in the air explains why you some times take your hair down from a perfectly smooth updo and find mysterious tangles?
Seriously nasty though.

So please, please ignore the disgusting specks and dust caught in the hairs!
I tried to pick them out, but they almost seemed to "fuse" with the hair and spray-residue.

Second observation
The hair SPF test has a glossiness to it that makes me very suspicious of it. In my experience (And just I might be a cynical old rat here) this type of glossiness usually mask a crappy product hiding damage and making people want to buy it again for the "healthy shine". 

Third
The skin SPF really stained the cardboard. You can tell where the sticky tape is holding the hair in place: Under there, the cardboard still has its original colour. Around it, the cardboard is stained a yellowish brown that looks like aged paper.

Fourth and the most important
I definitely see colour differences:

• The skin SPF patch is definitely darker than the control patch.
• The hair SPF patch is definitely lighter than the control patch.

I took 63 pictures in total trying to get the effect, but I think it's very difficult to see any difference on the photos. Damn. I guess it's time for me to get a proper digital camera instead of my camera phone. The thought of buying a camera that would be used pretty much only for blogging does make me cringe though... But right now I have done a serious experiment where I feel I can't properly show the results due to camera quality and that makes me very unhappy.

Anyways. Pictures.

Indoors and in artificial light conditions, no flash

Indoors and in artificial light conditions, with flash

Outdoors and in natural light conditions, indirect sunlight

Outdoors and in natural light conditions, direct sunlight (Morning sun)

Outdoors and in natural light conditions, direct sunlight (Mid day sun)

In reality, the direct mid day sun made the hair SPF test very, very shiny, but that didn't even translate well in my phones camera. Hmm. 

So here is what I'm wondering
Does the skin SPF actively darken the hair or does it protect it from fading?
It does appear that the cardboard is slightly darker around the SPF for skin though!
So does it mean that the SPF for hair has darkening/miscolouring properties?

And does the hair SPF actively lighten the hair or does it just not protect from fading?

Let's compare to a fresh patch of shed hair from the collection. I got the shed hairs balled up a little more tightly than the SPF test, so it appears slightly darker in the middle. 

Indoors and in artificial light conditions, no flash

Indoors and in artificial light conditions, with flash

Outdoors and in natural light conditions, direct sunlight (Mid day sun)

Does anyone recognize any lightening or darkening ingredients in the products? 
Full ingredient list in first post. 
I'm not an ingredient expert (Not at all), but does someone else recognize any potential lightening or darkening properties in the ingredient lists?

I must admit I got a little weirded out by the potentially lightening effect of the hair SPF and put Schwarzkopf Bonacure sun protect back into the cabinet for now. 

Does anyone have any input on this?