The other issue is that these products leave behind residue, further weighing the hair down.
Hairspray also contains ethanol which could be anothersneaky culprit behind your thinning hair.
The first wash removes product buildup, while the second deep cleans and nourishes the strands.

These properties enable them to more effectively break down product buildup on the hair and scalp.
Clarifying shampoos are ideal for restoring volume to flat hair.
But, naturally, you oughta rinse out the shampoo thoroughly with warm water first.

For the second round, you should consider the needs of your skin and scalp.
In this case, use an anti-breakage or moisturizing shampoo.
Likewise, you could also use a volumizing shampoo for a fuller look.

After your second wash, the next step is conditioning which is great for hair texture and volume.
Instead, use a blow-dryer with cold air and blow your hair against its usual direction for more volume.
You also need to ensure you’re nourishing your hair with the right products, too.
Finally, double shampooing is tough on the hair and scalp, so it’s not for daily use.
It’s simply too drying for people who wash their hair every day.
Further, if you double-shampoo several times a month, don’t use a clarifying shampoo each time.
Your hair will benefit more from moisturizing and everyday shampoos that will keep your oil production levels balanced.