The next morning at breakfast your mother asked you "Before you head to work I need you to come down to the lab. We need to check whether we can spot any changes to your skin"
Once more your sister gave you an examination. She spent most of the time looking at your arm with some special magnifying goggles and a bright light. Her verdict to your mother was "I think something is happening but it's hard to be sure. Another 24 hours should tell"
That day at work you finally worked up the courage to ask the new office cadet Carrie whether she would like to see a movie with you. To your surprise she said yes. You made the date for Friday night. 4 days away. You had a skip in your step on the way home.
Next morning you were given another examination. You had not noticed anything yourself but your sister seemed ecstatic "It's working ! Look! There was a small sunspot here. Now it's gone" She showed your left arm to your Mum. They compared the photo they had taken before applying the cream to what they currently saw.
Your mum was pretty pleased. "Look Dan. This is the photo we took on Sunday. Compare it to this morning" Even you could tell the difference.
"So what does this mean?" you asked.
"That it doesn't just affect female skin. We were not sure if it would work on you as magic ingredient is an sequence from the RNA of the X chromosome of an ovum"
You wished your Mum would stop with the scientific mumbo jumbo. Surely by now she was aware that you had not inherited her genius. Your sister had got your share but you had accepted that years ago. "Ah okay Mum. Can I go now?"
"Yes" she then turned to your sister. "I think checkups every 24 hours. We need to see for how long the changes persevere. We can assemble a time sequence of images" You got out of there as quickly as possible. Your job as a trainee security guard suddenly seemed much better after Carrie had agreed to go out with you. You wanted to be there when she arrived at work.
The next morning you didn't need special goggles to see the changes on your forearm. There was a 5 cm patch on your left arm where your hairs seemed bleached and your skin was softer. Your sister took photographs and measurements documenting all her observations.
Your work uniform was long-sleeved so you didn't see your forearm again until you were back home. The patch had grown, probably doubling in diameter. The hairs were not only bleached they seemed diminished. You were not too worried. Your Mum had said there was no danger and she was a lot smarter then you. Your Mum and sister were down in the lab working. You didn't think it was worth bothering them.
By Thursday morning the patch had doubled in size once more. You sister seemed to have not expected that. She called your mother over. "Its spreading. It only affected my arm where we rubbed the cream on. But look at Dan's arm. Half his forearm is now affected"
The women documented the size of the patch. It now encircled your forearm. 21.3 cm long was the measurement your sister made. Your sister even took cell samples. They seemed quite excited by this new turn of events.
You had lunch with Carrie that day. You arranged to meet her at the cinema's at 6. There was a session of the new Fast and Furious movie at 6.30 and her parents wanted her home before 10. After lunch you noticed the change in skin had reached your wrist. It was visible even with your uniform.
That evening you went down to the lab to show your mother and sister what had happened. You were starting to be a bit worried. The changes now reached from your elbow to beyond your wrist.
Measurements also showed your forearm was now thinner. Your muscles appeared to be wasting away. Your wrist was thinner. Your Mum showed real concern for the first time. She was also cross at your sister. Evidently the cell sample she had collected this morning had been contaminated with your sisters DNA. This time your mother did the cell collection herself.